C----------------------------------------------------------------------- double precision function sscale(r) double precision r,gamm include "COMMON.SPLITELE" if(r.lt.r_cut-rlamb) then sscale=1.0d0 else if(r.le.r_cut.and.r.ge.r_cut-rlamb) then gamm=(r-(r_cut-rlamb))/rlamb sscale=1.0d0+gamm*gamm*(2*gamm-3.0d0) else sscale=0d0 endif return end C----------------------------------------------------------------------- subroutine elj_long(evdw) C C This subroutine calculates the interaction energy of nonbonded side chains C assuming the LJ potential of interaction. C implicit real*8 (a-h,o-z) include 'DIMENSIONS' parameter (accur=1.0d-10) include 'COMMON.GEO' include 'COMMON.VAR' include 'COMMON.LOCAL' include 'COMMON.CHAIN' include 'COMMON.DERIV' include 'COMMON.INTERACT' include 'COMMON.TORSION' include 'COMMON.SBRIDGE' include 'COMMON.NAMES' include 'COMMON.IOUNITS' include 'COMMON.CONTACTS' dimension gg(3) c write(iout,*)'Entering ELJ nnt=',nnt,' nct=',nct,' expon=',expon evdw=0.0D0 do i=iatsc_s,iatsc_e itypi=itype(i) itypi1=itype(i+1) xi=c(1,nres+i) yi=c(2,nres+i) zi=c(3,nres+i) C C Calculate SC interaction energy. C do iint=1,nint_gr(i) cd write (iout,*) 'i=',i,' iint=',iint,' istart=',istart(i,iint), cd & 'iend=',iend(i,iint) do j=istart(i,iint),iend(i,iint) itypj=itype(j) xj=c(1,nres+j)-xi yj=c(2,nres+j)-yi zj=c(3,nres+j)-zi rij=xj*xj+yj*yj+zj*zj sss=sscale(dsqrt(rij)/sigma(itypi,itypj)) if (sss.lt.1.0d0) then rrij=1.0D0/rij fac=rrij**expon2 e1=fac*fac*aa(itypi,itypj) e2=fac*bb(itypi,itypj) evdwij=e1+e2 evdw=evdw+(1.0d0-sss)*evdwij C C Calculate the components of the gradient in DC and X C fac=-rrij*(e1+evdwij)*(1.0d0-sss) gg(1)=xj*fac gg(2)=yj*fac gg(3)=zj*fac do k=1,3 gvdwx(k,i)=gvdwx(k,i)-gg(k) gvdwx(k,j)=gvdwx(k,j)+gg(k) enddo do k=i,j-1 do l=1,3 gvdwc(l,k)=gvdwc(l,k)+gg(l) enddo enddo endif enddo ! j enddo ! iint enddo ! i do i=1,nct do j=1,3 gvdwc(j,i)=expon*gvdwc(j,i) gvdwx(j,i)=expon*gvdwx(j,i) enddo enddo C****************************************************************************** C C N O T E !!! C C To save time, the factor of EXPON has been extracted from ALL components C of GVDWC and GRADX. Remember to multiply them by this factor before further C use! C C****************************************************************************** return end C----------------------------------------------------------------------- subroutine elj_short(evdw) C C This subroutine calculates the interaction energy of nonbonded side chains C assuming the LJ potential of interaction. C implicit real*8 (a-h,o-z) include 'DIMENSIONS' parameter (accur=1.0d-10) include 'COMMON.GEO' include 'COMMON.VAR' include 'COMMON.LOCAL' include 'COMMON.CHAIN' include 'COMMON.DERIV' include 'COMMON.INTERACT' include 'COMMON.TORSION' include 'COMMON.SBRIDGE' include 'COMMON.NAMES' include 'COMMON.IOUNITS' include 'COMMON.CONTACTS' dimension gg(3) c write(iout,*)'Entering ELJ nnt=',nnt,' nct=',nct,' expon=',expon evdw=0.0D0 do i=iatsc_s,iatsc_e itypi=itype(i) itypi1=itype(i+1) xi=c(1,nres+i) yi=c(2,nres+i) zi=c(3,nres+i) C C Calculate SC interaction energy. C do iint=1,nint_gr(i) cd write (iout,*) 'i=',i,' iint=',iint,' istart=',istart(i,iint), cd & 'iend=',iend(i,iint) do j=istart(i,iint),iend(i,iint) itypj=itype(j) xj=c(1,nres+j)-xi yj=c(2,nres+j)-yi zj=c(3,nres+j)-zi rij=xj*xj+yj*yj+zj*zj sss=sscale(dsqrt(rij)/sigma(itypi,itypj)) if (sss.gt.0.0d0) then rrij=1.0D0/rij fac=rrij**expon2 e1=fac*fac*aa(itypi,itypj) e2=fac*bb(itypi,itypj) evdwij=e1+e2 evdw=evdw+sss*evdwij C C Calculate the components of the gradient in DC and X C fac=-rrij*(e1+evdwij)*sss gg(1)=xj*fac gg(2)=yj*fac gg(3)=zj*fac do k=1,3 gvdwx(k,i)=gvdwx(k,i)-gg(k) gvdwx(k,j)=gvdwx(k,j)+gg(k) enddo do k=i,j-1 do l=1,3 gvdwc(l,k)=gvdwc(l,k)+gg(l) enddo enddo endif enddo ! j enddo ! iint enddo ! i do i=1,nct do j=1,3 gvdwc(j,i)=expon*gvdwc(j,i) gvdwx(j,i)=expon*gvdwx(j,i) enddo enddo C****************************************************************************** C C N O T E !!! C C To save time, the factor of EXPON has been extracted from ALL components C of GVDWC and GRADX. Remember to multiply them by this factor before further C use! C C****************************************************************************** return end C----------------------------------------------------------------------------- subroutine eljk_long(evdw) C C This subroutine calculates the interaction energy of nonbonded side chains C assuming the LJK potential of interaction. C implicit real*8 (a-h,o-z) include 'DIMENSIONS' include 'COMMON.GEO' include 'COMMON.VAR' include 'COMMON.LOCAL' include 'COMMON.CHAIN' include 'COMMON.DERIV' include 'COMMON.INTERACT' include 'COMMON.IOUNITS' include 'COMMON.NAMES' dimension gg(3) logical scheck c print *,'Entering ELJK nnt=',nnt,' nct=',nct,' expon=',expon evdw=0.0D0 do i=iatsc_s,iatsc_e itypi=itype(i) itypi1=itype(i+1) xi=c(1,nres+i) yi=c(2,nres+i) zi=c(3,nres+i) C C Calculate SC interaction energy. C do iint=1,nint_gr(i) do j=istart(i,iint),iend(i,iint) itypj=itype(j) xj=c(1,nres+j)-xi yj=c(2,nres+j)-yi zj=c(3,nres+j)-zi rrij=1.0D0/(xj*xj+yj*yj+zj*zj) fac_augm=rrij**expon e_augm=augm(itypi,itypj)*fac_augm r_inv_ij=dsqrt(rrij) rij=1.0D0/r_inv_ij sss=sscale(rij/sigma(itypi,itypj)) if (sss.lt.1.0d0) then r_shift_inv=1.0D0/(rij+r0(itypi,itypj)-sigma(itypi,itypj)) fac=r_shift_inv**expon e1=fac*fac*aa(itypi,itypj) e2=fac*bb(itypi,itypj) evdwij=e_augm+e1+e2 cd sigm=dabs(aa(itypi,itypj)/bb(itypi,itypj))**(1.0D0/6.0D0) cd epsi=bb(itypi,itypj)**2/aa(itypi,itypj) cd write (iout,'(2(a3,i3,2x),8(1pd12.4)/2(3(1pd12.4),5x)/)') cd & restyp(itypi),i,restyp(itypj),j,aa(itypi,itypj), cd & bb(itypi,itypj),augm(itypi,itypj),epsi,sigm, cd & sigma(itypi,itypj),1.0D0/dsqrt(rrij),evdwij, cd & (c(k,i),k=1,3),(c(k,j),k=1,3) evdw=evdw+evdwij*(1.0d0-sss) C C Calculate the components of the gradient in DC and X C fac=-2.0D0*rrij*e_augm-r_inv_ij*r_shift_inv*(e1+e1+e2) fac=fac*(1.0d0-sss) gg(1)=xj*fac gg(2)=yj*fac gg(3)=zj*fac do k=1,3 gvdwx(k,i)=gvdwx(k,i)-gg(k) gvdwx(k,j)=gvdwx(k,j)+gg(k) enddo do k=i,j-1 do l=1,3 gvdwc(l,k)=gvdwc(l,k)+gg(l) enddo enddo endif enddo ! j enddo ! iint enddo ! i do i=1,nct do j=1,3 gvdwc(j,i)=expon*gvdwc(j,i) gvdwx(j,i)=expon*gvdwx(j,i) enddo enddo return end C----------------------------------------------------------------------------- subroutine eljk_short(evdw) C C This subroutine calculates the interaction energy of nonbonded side chains C assuming the LJK potential of interaction. C implicit real*8 (a-h,o-z) include 'DIMENSIONS' include 'COMMON.GEO' include 'COMMON.VAR' include 'COMMON.LOCAL' include 'COMMON.CHAIN' include 'COMMON.DERIV' include 'COMMON.INTERACT' include 'COMMON.IOUNITS' include 'COMMON.NAMES' dimension gg(3) logical scheck c print *,'Entering ELJK nnt=',nnt,' nct=',nct,' expon=',expon evdw=0.0D0 do i=iatsc_s,iatsc_e itypi=itype(i) itypi1=itype(i+1) xi=c(1,nres+i) yi=c(2,nres+i) zi=c(3,nres+i) C C Calculate SC interaction energy. C do iint=1,nint_gr(i) do j=istart(i,iint),iend(i,iint) itypj=itype(j) xj=c(1,nres+j)-xi yj=c(2,nres+j)-yi zj=c(3,nres+j)-zi rrij=1.0D0/(xj*xj+yj*yj+zj*zj) fac_augm=rrij**expon e_augm=augm(itypi,itypj)*fac_augm r_inv_ij=dsqrt(rrij) rij=1.0D0/r_inv_ij sss=sscale(rij/sigma(itypi,itypj)) if (sss.gt.0.0d0) then r_shift_inv=1.0D0/(rij+r0(itypi,itypj)-sigma(itypi,itypj)) fac=r_shift_inv**expon e1=fac*fac*aa(itypi,itypj) e2=fac*bb(itypi,itypj) evdwij=e_augm+e1+e2 cd sigm=dabs(aa(itypi,itypj)/bb(itypi,itypj))**(1.0D0/6.0D0) cd epsi=bb(itypi,itypj)**2/aa(itypi,itypj) cd write (iout,'(2(a3,i3,2x),8(1pd12.4)/2(3(1pd12.4),5x)/)') cd & restyp(itypi),i,restyp(itypj),j,aa(itypi,itypj), cd & bb(itypi,itypj),augm(itypi,itypj),epsi,sigm, cd & sigma(itypi,itypj),1.0D0/dsqrt(rrij),evdwij, cd & (c(k,i),k=1,3),(c(k,j),k=1,3) evdw=evdw+evdwij*sss C C Calculate the components of the gradient in DC and X C fac=-2.0D0*rrij*e_augm-r_inv_ij*r_shift_inv*(e1+e1+e2) fac=fac*sss gg(1)=xj*fac gg(2)=yj*fac gg(3)=zj*fac do k=1,3 gvdwx(k,i)=gvdwx(k,i)-gg(k) gvdwx(k,j)=gvdwx(k,j)+gg(k) enddo do k=i,j-1 do l=1,3 gvdwc(l,k)=gvdwc(l,k)+gg(l) enddo enddo endif enddo ! j enddo ! iint enddo ! i do i=1,nct do j=1,3 gvdwc(j,i)=expon*gvdwc(j,i) gvdwx(j,i)=expon*gvdwx(j,i) enddo enddo return end C----------------------------------------------------------------------------- subroutine ebp_long(evdw) C C This subroutine calculates the interaction energy of nonbonded side chains C assuming the Berne-Pechukas potential of interaction. C implicit real*8 (a-h,o-z) include 'DIMENSIONS' include 'COMMON.GEO' include 'COMMON.VAR' include 'COMMON.LOCAL' include 'COMMON.CHAIN' include 'COMMON.DERIV' include 'COMMON.NAMES' include 'COMMON.INTERACT' include 'COMMON.IOUNITS' include 'COMMON.CALC' common /srutu/ icall c double precision rrsave(maxdim) logical lprn evdw=0.0D0 c print *,'Entering EBP nnt=',nnt,' nct=',nct,' expon=',expon evdw=0.0D0 c if (icall.eq.0) then c lprn=.true. c else lprn=.false. c endif ind=0 do i=iatsc_s,iatsc_e itypi=itype(i) itypi1=itype(i+1) xi=c(1,nres+i) yi=c(2,nres+i) zi=c(3,nres+i) dxi=dc_norm(1,nres+i) dyi=dc_norm(2,nres+i) dzi=dc_norm(3,nres+i) c dsci_inv=dsc_inv(itypi) dsci_inv=vbld_inv(i+nres) C C Calculate SC interaction energy. C do iint=1,nint_gr(i) do j=istart(i,iint),iend(i,iint) ind=ind+1 itypj=itype(j) c dscj_inv=dsc_inv(itypj) dscj_inv=vbld_inv(j+nres) chi1=chi(itypi,itypj) chi2=chi(itypj,itypi) chi12=chi1*chi2 chip1=chip(itypi) chip2=chip(itypj) chip12=chip1*chip2 alf1=alp(itypi) alf2=alp(itypj) alf12=0.5D0*(alf1+alf2) C For diagnostics only!!! c chi1=0.0D0 c chi2=0.0D0 c chi12=0.0D0 c chip1=0.0D0 c chip2=0.0D0 c chip12=0.0D0 c alf1=0.0D0 c alf2=0.0D0 c alf12=0.0D0 xj=c(1,nres+j)-xi yj=c(2,nres+j)-yi zj=c(3,nres+j)-zi dxj=dc_norm(1,nres+j) dyj=dc_norm(2,nres+j) dzj=dc_norm(3,nres+j) rrij=1.0D0/(xj*xj+yj*yj+zj*zj) cd if (icall.eq.0) then cd rrsave(ind)=rrij cd else cd rrij=rrsave(ind) cd endif rij=dsqrt(rrij) sss=sscale(1.0d0/(rij*sigmaii(itypi,itypj))) if (sss.lt.1.0d0) then C Calculate the angle-dependent terms of energy & contributions to derivatives. call sc_angular C Calculate whole angle-dependent part of epsilon and contributions C to its derivatives fac=(rrij*sigsq)**expon2 e1=fac*fac*aa(itypi,itypj) e2=fac*bb(itypi,itypj) evdwij=eps1*eps2rt*eps3rt*(e1+e2) eps2der=evdwij*eps3rt eps3der=evdwij*eps2rt evdwij=evdwij*eps2rt*eps3rt evdw=evdw+evdwij*(1.0d0-sss) if (lprn) then sigm=dabs(aa(itypi,itypj)/bb(itypi,itypj))**(1.0D0/6.0D0) epsi=bb(itypi,itypj)**2/aa(itypi,itypj) cd write (iout,'(2(a3,i3,2x),15(0pf7.3))') cd & restyp(itypi),i,restyp(itypj),j, cd & epsi,sigm,chi1,chi2,chip1,chip2, cd & eps1,eps2rt**2,eps3rt**2,1.0D0/dsqrt(sigsq), cd & om1,om2,om12,1.0D0/dsqrt(rrij), cd & evdwij endif C Calculate gradient components. e1=e1*eps1*eps2rt**2*eps3rt**2 fac=-expon*(e1+evdwij) sigder=fac/sigsq fac=rrij*fac C Calculate radial part of the gradient gg(1)=xj*fac gg(2)=yj*fac gg(3)=zj*fac C Calculate the angular part of the gradient and sum add the contributions C to the appropriate components of the Cartesian gradient. call sc_grad_scale(1.0d0-sss) endif enddo ! j enddo ! iint enddo ! i c stop return end C----------------------------------------------------------------------------- subroutine ebp_short(evdw) C C This subroutine calculates the interaction energy of nonbonded side chains C assuming the Berne-Pechukas potential of interaction. C implicit real*8 (a-h,o-z) include 'DIMENSIONS' include 'COMMON.GEO' include 'COMMON.VAR' include 'COMMON.LOCAL' include 'COMMON.CHAIN' include 'COMMON.DERIV' include 'COMMON.NAMES' include 'COMMON.INTERACT' include 'COMMON.IOUNITS' include 'COMMON.CALC' common /srutu/ icall c double precision rrsave(maxdim) logical lprn evdw=0.0D0 c print *,'Entering EBP nnt=',nnt,' nct=',nct,' expon=',expon evdw=0.0D0 c if (icall.eq.0) then c lprn=.true. c else lprn=.false. c endif ind=0 do i=iatsc_s,iatsc_e itypi=itype(i) itypi1=itype(i+1) xi=c(1,nres+i) yi=c(2,nres+i) zi=c(3,nres+i) dxi=dc_norm(1,nres+i) dyi=dc_norm(2,nres+i) dzi=dc_norm(3,nres+i) c dsci_inv=dsc_inv(itypi) dsci_inv=vbld_inv(i+nres) C C Calculate SC interaction energy. C do iint=1,nint_gr(i) do j=istart(i,iint),iend(i,iint) ind=ind+1 itypj=itype(j) c dscj_inv=dsc_inv(itypj) dscj_inv=vbld_inv(j+nres) chi1=chi(itypi,itypj) chi2=chi(itypj,itypi) chi12=chi1*chi2 chip1=chip(itypi) chip2=chip(itypj) chip12=chip1*chip2 alf1=alp(itypi) alf2=alp(itypj) alf12=0.5D0*(alf1+alf2) C For diagnostics only!!! c chi1=0.0D0 c chi2=0.0D0 c chi12=0.0D0 c chip1=0.0D0 c chip2=0.0D0 c chip12=0.0D0 c alf1=0.0D0 c alf2=0.0D0 c alf12=0.0D0 xj=c(1,nres+j)-xi yj=c(2,nres+j)-yi zj=c(3,nres+j)-zi dxj=dc_norm(1,nres+j) dyj=dc_norm(2,nres+j) dzj=dc_norm(3,nres+j) rrij=1.0D0/(xj*xj+yj*yj+zj*zj) cd if (icall.eq.0) then cd rrsave(ind)=rrij cd else cd rrij=rrsave(ind) cd endif rij=dsqrt(rrij) sss=sscale(1.0d0/(rij*sigmaii(itypi,itypj))) if (sss.gt.0.0d0) then C Calculate the angle-dependent terms of energy & contributions to derivatives. call sc_angular C Calculate whole angle-dependent part of epsilon and contributions C to its derivatives fac=(rrij*sigsq)**expon2 e1=fac*fac*aa(itypi,itypj) e2=fac*bb(itypi,itypj) evdwij=eps1*eps2rt*eps3rt*(e1+e2) eps2der=evdwij*eps3rt eps3der=evdwij*eps2rt evdwij=evdwij*eps2rt*eps3rt evdw=evdw+evdwij*sss if (lprn) then sigm=dabs(aa(itypi,itypj)/bb(itypi,itypj))**(1.0D0/6.0D0) epsi=bb(itypi,itypj)**2/aa(itypi,itypj) cd write (iout,'(2(a3,i3,2x),15(0pf7.3))') cd & restyp(itypi),i,restyp(itypj),j, cd & epsi,sigm,chi1,chi2,chip1,chip2, cd & eps1,eps2rt**2,eps3rt**2,1.0D0/dsqrt(sigsq), cd & om1,om2,om12,1.0D0/dsqrt(rrij), cd & evdwij endif C Calculate gradient components. e1=e1*eps1*eps2rt**2*eps3rt**2 fac=-expon*(e1+evdwij) sigder=fac/sigsq fac=rrij*fac C Calculate radial part of the gradient gg(1)=xj*fac gg(2)=yj*fac gg(3)=zj*fac C Calculate the angular part of the gradient and sum add the contributions C to the appropriate components of the Cartesian gradient. call sc_grad_scale(sss) endif enddo ! j enddo ! iint enddo ! i c stop return end C----------------------------------------------------------------------------- subroutine egb_long(evdw) C C This subroutine calculates the interaction energy of nonbonded side chains C assuming the Gay-Berne potential of interaction. C implicit real*8 (a-h,o-z) include 'DIMENSIONS' include 'COMMON.GEO' include 'COMMON.VAR' include 'COMMON.LOCAL' include 'COMMON.CHAIN' include 'COMMON.DERIV' include 'COMMON.NAMES' include 'COMMON.INTERACT' include 'COMMON.IOUNITS' include 'COMMON.CALC' include 'COMMON.CONTROL' logical lprn evdw=0.0D0 ccccc energy_dec=.false. c print *,'Entering EGB nnt=',nnt,' nct=',nct,' expon=',expon evdw=0.0D0 lprn=.false. c if (icall.eq.0) lprn=.false. ind=0 do i=iatsc_s,iatsc_e itypi=itype(i) itypi1=itype(i+1) xi=c(1,nres+i) yi=c(2,nres+i) zi=c(3,nres+i) dxi=dc_norm(1,nres+i) dyi=dc_norm(2,nres+i) dzi=dc_norm(3,nres+i) c dsci_inv=dsc_inv(itypi) dsci_inv=vbld_inv(i+nres) c write (iout,*) "i",i,dsc_inv(itypi),dsci_inv,1.0d0/vbld(i+nres) c write (iout,*) "dcnori",dxi*dxi+dyi*dyi+dzi*dzi C C Calculate SC interaction energy. C do iint=1,nint_gr(i) do j=istart(i,iint),iend(i,iint) ind=ind+1 itypj=itype(j) c dscj_inv=dsc_inv(itypj) dscj_inv=vbld_inv(j+nres) c write (iout,*) "j",j,dsc_inv(itypj),dscj_inv, c & 1.0d0/vbld(j+nres) c write (iout,*) "i",i," j", j," itype",itype(i),itype(j) sig0ij=sigma(itypi,itypj) chi1=chi(itypi,itypj) chi2=chi(itypj,itypi) chi12=chi1*chi2 chip1=chip(itypi) chip2=chip(itypj) chip12=chip1*chip2 alf1=alp(itypi) alf2=alp(itypj) alf12=0.5D0*(alf1+alf2) C For diagnostics only!!! c chi1=0.0D0 c chi2=0.0D0 c chi12=0.0D0 c chip1=0.0D0 c chip2=0.0D0 c chip12=0.0D0 c alf1=0.0D0 c alf2=0.0D0 c alf12=0.0D0 xj=c(1,nres+j)-xi yj=c(2,nres+j)-yi zj=c(3,nres+j)-zi dxj=dc_norm(1,nres+j) dyj=dc_norm(2,nres+j) dzj=dc_norm(3,nres+j) c write (iout,*) "dcnorj",dxi*dxi+dyi*dyi+dzi*dzi c write (iout,*) "j",j," dc_norm", c & dc_norm(1,nres+j),dc_norm(2,nres+j),dc_norm(3,nres+j) rrij=1.0D0/(xj*xj+yj*yj+zj*zj) rij=dsqrt(rrij) sss=sscale(1.0d0/(rij*sigmaii(itypi,itypj))) write(iout,*) "long",i,itypi,j,itypj," rij",1.0d0/rij, & " sigmaii",sigmaii(itypi,itypj)," sss",sss if (sss.lt.1.0d0) then C Calculate angle-dependent terms of energy and contributions to their C derivatives. call sc_angular sigsq=1.0D0/sigsq sig=sig0ij*dsqrt(sigsq) rij_shift=1.0D0/rij-sig+sig0ij c for diagnostics; uncomment c rij_shift=1.2*sig0ij C I hate to put IF's in the loops, but here don't have another choice!!!! if (rij_shift.le.0.0D0) then evdw=1.0D20 cd write (iout,'(2(a3,i3,2x),17(0pf7.3))') cd & restyp(itypi),i,restyp(itypj),j, cd & rij_shift,1.0D0/rij,sig,sig0ij,sigsq,1-dsqrt(sigsq) return endif sigder=-sig*sigsq c--------------------------------------------------------------- rij_shift=1.0D0/rij_shift fac=rij_shift**expon e1=fac*fac*aa(itypi,itypj) e2=fac*bb(itypi,itypj) evdwij=eps1*eps2rt*eps3rt*(e1+e2) eps2der=evdwij*eps3rt eps3der=evdwij*eps2rt c write (iout,*) "sigsq",sigsq," sig",sig," eps2rt",eps2rt, c & " eps3rt",eps3rt," eps1",eps1," e1",e1," e2",e2 evdwij=evdwij*eps2rt*eps3rt evdw=evdw+evdwij*(1.0d0-sss) write (iout,*) "evdwij",evdwij," evdw",evdw if (lprn) then sigm=dabs(aa(itypi,itypj)/bb(itypi,itypj))**(1.0D0/6.0D0) epsi=bb(itypi,itypj)**2/aa(itypi,itypj) write (iout,'(2(a3,i3,2x),17(0pf7.3))') & restyp(itypi),i,restyp(itypj),j, & epsi,sigm,chi1,chi2,chip1,chip2, & eps1,eps2rt**2,eps3rt**2,sig,sig0ij, & om1,om2,om12,1.0D0/rij,1.0D0/rij_shift, & evdwij endif if (energy_dec) write (iout,'(a6,2i5,0pf7.3)') & 'evdw',i,j,evdwij C Calculate gradient components. e1=e1*eps1*eps2rt**2*eps3rt**2 fac=-expon*(e1+evdwij)*rij_shift sigder=fac*sigder fac=rij*fac c fac=0.0d0 C Calculate the radial part of the gradient gg(1)=xj*fac gg(2)=yj*fac gg(3)=zj*fac C Calculate angular part of the gradient. call sc_grad_scale(1.0d0-sss) endif enddo ! j enddo ! iint enddo ! i cccc energy_dec=.false. return end C----------------------------------------------------------------------------- subroutine egb_short(evdw) C C This subroutine calculates the interaction energy of nonbonded side chains C assuming the Gay-Berne potential of interaction. C implicit real*8 (a-h,o-z) include 'DIMENSIONS' include 'COMMON.GEO' include 'COMMON.VAR' include 'COMMON.LOCAL' include 'COMMON.CHAIN' include 'COMMON.DERIV' include 'COMMON.NAMES' include 'COMMON.INTERACT' include 'COMMON.IOUNITS' include 'COMMON.CALC' include 'COMMON.CONTROL' logical lprn evdw=0.0D0 ccccc energy_dec=.false. c print *,'Entering EGB nnt=',nnt,' nct=',nct,' expon=',expon evdw=0.0D0 lprn=.false. c if (icall.eq.0) lprn=.false. ind=0 do i=iatsc_s,iatsc_e itypi=itype(i) itypi1=itype(i+1) xi=c(1,nres+i) yi=c(2,nres+i) zi=c(3,nres+i) dxi=dc_norm(1,nres+i) dyi=dc_norm(2,nres+i) dzi=dc_norm(3,nres+i) c dsci_inv=dsc_inv(itypi) dsci_inv=vbld_inv(i+nres) c write (iout,*) "i",i,dsc_inv(itypi),dsci_inv,1.0d0/vbld(i+nres) c write (iout,*) "dcnori",dxi*dxi+dyi*dyi+dzi*dzi C C Calculate SC interaction energy. C do iint=1,nint_gr(i) do j=istart(i,iint),iend(i,iint) ind=ind+1 itypj=itype(j) c dscj_inv=dsc_inv(itypj) dscj_inv=vbld_inv(j+nres) c write (iout,*) "j",j,dsc_inv(itypj),dscj_inv, c & 1.0d0/vbld(j+nres) c write (iout,*) "i",i," j", j," itype",itype(i),itype(j) sig0ij=sigma(itypi,itypj) chi1=chi(itypi,itypj) chi2=chi(itypj,itypi) chi12=chi1*chi2 chip1=chip(itypi) chip2=chip(itypj) chip12=chip1*chip2 alf1=alp(itypi) alf2=alp(itypj) alf12=0.5D0*(alf1+alf2) C For diagnostics only!!! c chi1=0.0D0 c chi2=0.0D0 c chi12=0.0D0 c chip1=0.0D0 c chip2=0.0D0 c chip12=0.0D0 c alf1=0.0D0 c alf2=0.0D0 c alf12=0.0D0 xj=c(1,nres+j)-xi yj=c(2,nres+j)-yi zj=c(3,nres+j)-zi dxj=dc_norm(1,nres+j) dyj=dc_norm(2,nres+j) dzj=dc_norm(3,nres+j) c write (iout,*) "dcnorj",dxi*dxi+dyi*dyi+dzi*dzi c write (iout,*) "j",j," dc_norm", c & dc_norm(1,nres+j),dc_norm(2,nres+j),dc_norm(3,nres+j) rrij=1.0D0/(xj*xj+yj*yj+zj*zj) rij=dsqrt(rrij) sss=sscale(1.0d0/(rij*sigmaii(itypi,itypj))) write(iout,*) "short",i,itypi,j,itypj," rij",1.0d0/rij, & " sigmaii",sigmaii(itypi,itypj)," sss",sss if (sss.gt.0.0d0) then C Calculate angle-dependent terms of energy and contributions to their C derivatives. call sc_angular sigsq=1.0D0/sigsq sig=sig0ij*dsqrt(sigsq) rij_shift=1.0D0/rij-sig+sig0ij c for diagnostics; uncomment c rij_shift=1.2*sig0ij C I hate to put IF's in the loops, but here don't have another choice!!!! if (rij_shift.le.0.0D0) then evdw=1.0D20 cd write (iout,'(2(a3,i3,2x),17(0pf7.3))') cd & restyp(itypi),i,restyp(itypj),j, cd & rij_shift,1.0D0/rij,sig,sig0ij,sigsq,1-dsqrt(sigsq) return endif sigder=-sig*sigsq c--------------------------------------------------------------- rij_shift=1.0D0/rij_shift fac=rij_shift**expon e1=fac*fac*aa(itypi,itypj) e2=fac*bb(itypi,itypj) evdwij=eps1*eps2rt*eps3rt*(e1+e2) eps2der=evdwij*eps3rt eps3der=evdwij*eps2rt c write (iout,*) "sigsq",sigsq," sig",sig," eps2rt",eps2rt, c & " eps3rt",eps3rt," eps1",eps1," e1",e1," e2",e2 evdwij=evdwij*eps2rt*eps3rt evdw=evdw+evdwij*sss write (iout,*) "evdwij",evdwij," evdw",evdw if (lprn) then sigm=dabs(aa(itypi,itypj)/bb(itypi,itypj))**(1.0D0/6.0D0) epsi=bb(itypi,itypj)**2/aa(itypi,itypj) write (iout,'(2(a3,i3,2x),17(0pf7.3))') & restyp(itypi),i,restyp(itypj),j, & epsi,sigm,chi1,chi2,chip1,chip2, & eps1,eps2rt**2,eps3rt**2,sig,sig0ij, & om1,om2,om12,1.0D0/rij,1.0D0/rij_shift, & evdwij endif if (energy_dec) write (iout,'(a6,2i5,0pf7.3)') & 'evdw',i,j,evdwij C Calculate gradient components. e1=e1*eps1*eps2rt**2*eps3rt**2 fac=-expon*(e1+evdwij)*rij_shift sigder=fac*sigder fac=rij*fac c fac=0.0d0 C Calculate the radial part of the gradient gg(1)=xj*fac gg(2)=yj*fac gg(3)=zj*fac C Calculate angular part of the gradient. call sc_grad_scale(sss) endif enddo ! j enddo ! iint enddo ! i cccc energy_dec=.false. return end C----------------------------------------------------------------------------- subroutine egbv_long(evdw) C C This subroutine calculates the interaction energy of nonbonded side chains C assuming the Gay-Berne-Vorobjev potential of interaction. C implicit real*8 (a-h,o-z) include 'DIMENSIONS' include 'COMMON.GEO' include 'COMMON.VAR' include 'COMMON.LOCAL' include 'COMMON.CHAIN' include 'COMMON.DERIV' include 'COMMON.NAMES' include 'COMMON.INTERACT' include 'COMMON.IOUNITS' include 'COMMON.CALC' common /srutu/ icall logical lprn evdw=0.0D0 c print *,'Entering EGB nnt=',nnt,' nct=',nct,' expon=',expon evdw=0.0D0 lprn=.false. c if (icall.eq.0) lprn=.true. ind=0 do i=iatsc_s,iatsc_e itypi=itype(i) itypi1=itype(i+1) xi=c(1,nres+i) yi=c(2,nres+i) zi=c(3,nres+i) dxi=dc_norm(1,nres+i) dyi=dc_norm(2,nres+i) dzi=dc_norm(3,nres+i) c dsci_inv=dsc_inv(itypi) dsci_inv=vbld_inv(i+nres) C C Calculate SC interaction energy. C do iint=1,nint_gr(i) do j=istart(i,iint),iend(i,iint) ind=ind+1 itypj=itype(j) c dscj_inv=dsc_inv(itypj) dscj_inv=vbld_inv(j+nres) sig0ij=sigma(itypi,itypj) r0ij=r0(itypi,itypj) chi1=chi(itypi,itypj) chi2=chi(itypj,itypi) chi12=chi1*chi2 chip1=chip(itypi) chip2=chip(itypj) chip12=chip1*chip2 alf1=alp(itypi) alf2=alp(itypj) alf12=0.5D0*(alf1+alf2) C For diagnostics only!!! c chi1=0.0D0 c chi2=0.0D0 c chi12=0.0D0 c chip1=0.0D0 c chip2=0.0D0 c chip12=0.0D0 c alf1=0.0D0 c alf2=0.0D0 c alf12=0.0D0 xj=c(1,nres+j)-xi yj=c(2,nres+j)-yi zj=c(3,nres+j)-zi dxj=dc_norm(1,nres+j) dyj=dc_norm(2,nres+j) dzj=dc_norm(3,nres+j) rrij=1.0D0/(xj*xj+yj*yj+zj*zj) rij=dsqrt(rrij) sss=sscale(1.0d0/(rij*sigmaii(itypi,itypj))) if (sss.lt.1.0d0) then C Calculate angle-dependent terms of energy and contributions to their C derivatives. call sc_angular sigsq=1.0D0/sigsq sig=sig0ij*dsqrt(sigsq) rij_shift=1.0D0/rij-sig+r0ij C I hate to put IF's in the loops, but here don't have another choice!!!! if (rij_shift.le.0.0D0) then evdw=1.0D20 return endif sigder=-sig*sigsq c--------------------------------------------------------------- rij_shift=1.0D0/rij_shift fac=rij_shift**expon e1=fac*fac*aa(itypi,itypj) e2=fac*bb(itypi,itypj) evdwij=eps1*eps2rt*eps3rt*(e1+e2) eps2der=evdwij*eps3rt eps3der=evdwij*eps2rt fac_augm=rrij**expon e_augm=augm(itypi,itypj)*fac_augm evdwij=evdwij*eps2rt*eps3rt evdw=evdw+(evdwij+e_augm)*(1.0d0-sss) if (lprn) then sigm=dabs(aa(itypi,itypj)/bb(itypi,itypj))**(1.0D0/6.0D0) epsi=bb(itypi,itypj)**2/aa(itypi,itypj) write (iout,'(2(a3,i3,2x),17(0pf7.3))') & restyp(itypi),i,restyp(itypj),j, & epsi,sigm,sig,(augm(itypi,itypj)/epsi)**(1.0D0/12.0D0), & chi1,chi2,chip1,chip2, & eps1,eps2rt**2,eps3rt**2, & om1,om2,om12,1.0D0/rij,1.0D0/rij_shift, & evdwij+e_augm endif C Calculate gradient components. e1=e1*eps1*eps2rt**2*eps3rt**2 fac=-expon*(e1+evdwij)*rij_shift sigder=fac*sigder fac=rij*fac-2*expon*rrij*e_augm C Calculate the radial part of the gradient gg(1)=xj*fac gg(2)=yj*fac gg(3)=zj*fac C Calculate angular part of the gradient. call sc_grad_scale(1.0d0-sss) endif enddo ! j enddo ! iint enddo ! i end C----------------------------------------------------------------------------- subroutine egbv_short(evdw) C C This subroutine calculates the interaction energy of nonbonded side chains C assuming the Gay-Berne-Vorobjev potential of interaction. C implicit real*8 (a-h,o-z) include 'DIMENSIONS' include 'COMMON.GEO' include 'COMMON.VAR' include 'COMMON.LOCAL' include 'COMMON.CHAIN' include 'COMMON.DERIV' include 'COMMON.NAMES' include 'COMMON.INTERACT' include 'COMMON.IOUNITS' include 'COMMON.CALC' common /srutu/ icall logical lprn evdw=0.0D0 c print *,'Entering EGB nnt=',nnt,' nct=',nct,' expon=',expon evdw=0.0D0 lprn=.false. c if (icall.eq.0) lprn=.true. ind=0 do i=iatsc_s,iatsc_e itypi=itype(i) itypi1=itype(i+1) xi=c(1,nres+i) yi=c(2,nres+i) zi=c(3,nres+i) dxi=dc_norm(1,nres+i) dyi=dc_norm(2,nres+i) dzi=dc_norm(3,nres+i) c dsci_inv=dsc_inv(itypi) dsci_inv=vbld_inv(i+nres) C C Calculate SC interaction energy. C do iint=1,nint_gr(i) do j=istart(i,iint),iend(i,iint) ind=ind+1 itypj=itype(j) c dscj_inv=dsc_inv(itypj) dscj_inv=vbld_inv(j+nres) sig0ij=sigma(itypi,itypj) r0ij=r0(itypi,itypj) chi1=chi(itypi,itypj) chi2=chi(itypj,itypi) chi12=chi1*chi2 chip1=chip(itypi) chip2=chip(itypj) chip12=chip1*chip2 alf1=alp(itypi) alf2=alp(itypj) alf12=0.5D0*(alf1+alf2) C For diagnostics only!!! c chi1=0.0D0 c chi2=0.0D0 c chi12=0.0D0 c chip1=0.0D0 c chip2=0.0D0 c chip12=0.0D0 c alf1=0.0D0 c alf2=0.0D0 c alf12=0.0D0 xj=c(1,nres+j)-xi yj=c(2,nres+j)-yi zj=c(3,nres+j)-zi dxj=dc_norm(1,nres+j) dyj=dc_norm(2,nres+j) dzj=dc_norm(3,nres+j) rrij=1.0D0/(xj*xj+yj*yj+zj*zj) rij=dsqrt(rrij) sss=sscale(1.0d0/(rij*sigmaii(itypi,itypj))) if (sss.gt.0.0d0) then C Calculate angle-dependent terms of energy and contributions to their C derivatives. call sc_angular sigsq=1.0D0/sigsq sig=sig0ij*dsqrt(sigsq) rij_shift=1.0D0/rij-sig+r0ij C I hate to put IF's in the loops, but here don't have another choice!!!! if (rij_shift.le.0.0D0) then evdw=1.0D20 return endif sigder=-sig*sigsq c--------------------------------------------------------------- rij_shift=1.0D0/rij_shift fac=rij_shift**expon e1=fac*fac*aa(itypi,itypj) e2=fac*bb(itypi,itypj) evdwij=eps1*eps2rt*eps3rt*(e1+e2) eps2der=evdwij*eps3rt eps3der=evdwij*eps2rt fac_augm=rrij**expon e_augm=augm(itypi,itypj)*fac_augm evdwij=evdwij*eps2rt*eps3rt evdw=evdw+(evdwij+e_augm)*sss if (lprn) then sigm=dabs(aa(itypi,itypj)/bb(itypi,itypj))**(1.0D0/6.0D0) epsi=bb(itypi,itypj)**2/aa(itypi,itypj) write (iout,'(2(a3,i3,2x),17(0pf7.3))') & restyp(itypi),i,restyp(itypj),j, & epsi,sigm,sig,(augm(itypi,itypj)/epsi)**(1.0D0/12.0D0), & chi1,chi2,chip1,chip2, & eps1,eps2rt**2,eps3rt**2, & om1,om2,om12,1.0D0/rij,1.0D0/rij_shift, & evdwij+e_augm endif C Calculate gradient components. e1=e1*eps1*eps2rt**2*eps3rt**2 fac=-expon*(e1+evdwij)*rij_shift sigder=fac*sigder fac=rij*fac-2*expon*rrij*e_augm C Calculate the radial part of the gradient gg(1)=xj*fac gg(2)=yj*fac gg(3)=zj*fac C Calculate angular part of the gradient. call sc_grad_scale(sss) endif enddo ! j enddo ! iint enddo ! i end C---------------------------------------------------------------------------- subroutine sc_grad_scale(scalfac) implicit real*8 (a-h,o-z) include 'DIMENSIONS' include 'COMMON.CHAIN' include 'COMMON.DERIV' include 'COMMON.CALC' include 'COMMON.IOUNITS' double precision dcosom1(3),dcosom2(3) double precision scalfac eom1=eps2der*eps2rt_om1-2.0D0*alf1*eps3der+sigder*sigsq_om1 eom2=eps2der*eps2rt_om2+2.0D0*alf2*eps3der+sigder*sigsq_om2 eom12=evdwij*eps1_om12+eps2der*eps2rt_om12 & -2.0D0*alf12*eps3der+sigder*sigsq_om12 c diagnostics only c eom1=0.0d0 c eom2=0.0d0 c eom12=evdwij*eps1_om12 c end diagnostics c write (iout,*) "eps2der",eps2der," eps3der",eps3der, c & " sigder",sigder c write (iout,*) "eps1_om12",eps1_om12," eps2rt_om12",eps2rt_om12 c write (iout,*) "eom1",eom1," eom2",eom2," eom12",eom12 do k=1,3 dcosom1(k)=rij*(dc_norm(k,nres+i)-om1*erij(k)) dcosom2(k)=rij*(dc_norm(k,nres+j)-om2*erij(k)) enddo do k=1,3 gg(k)=(gg(k)+eom1*dcosom1(k)+eom2*dcosom2(k))*scalfac enddo c write (iout,*) "gg",(gg(k),k=1,3) do k=1,3 gvdwx(k,i)=gvdwx(k,i)-gg(k) & +((eom12*(dc_norm(k,nres+j)-om12*dc_norm(k,nres+i)) & +eom1*(erij(k)-om1*dc_norm(k,nres+i)))*dsci_inv)*scalfac gvdwx(k,j)=gvdwx(k,j)+gg(k) & +((eom12*(dc_norm(k,nres+i)-om12*dc_norm(k,nres+j)) & +eom2*(erij(k)-om2*dc_norm(k,nres+j)))*dscj_inv)*scalfac c write (iout,*)(eom12*(dc_norm(k,nres+j)-om12*dc_norm(k,nres+i)) c & +eom1*(erij(k)-om1*dc_norm(k,nres+i)))*dsci_inv c write (iout,*)(eom12*(dc_norm(k,nres+i)-om12*dc_norm(k,nres+j)) c & +eom2*(erij(k)-om2*dc_norm(k,nres+j)))*dscj_inv enddo C C Calculate the components of the gradient in DC and X C do k=i,j-1 do l=1,3 gvdwc(l,k)=gvdwc(l,k)+gg(l) enddo enddo return end C-------------------------------------------------------------------------- subroutine eelec_scale(ees,evdw1,eel_loc,eello_turn3,eello_turn4) C C This subroutine calculates the average interaction energy and its gradient C in the virtual-bond vectors between non-adjacent peptide groups, based on C the potential described in Liwo et al., Protein Sci., 1993, 2, 1715. C The potential depends both on the distance of peptide-group centers and on C the orientation of the CA-CA virtual bonds. C implicit real*8 (a-h,o-z) include 'DIMENSIONS' include 'COMMON.CONTROL' include 'COMMON.IOUNITS' include 'COMMON.GEO' include 'COMMON.VAR' include 'COMMON.LOCAL' include 'COMMON.CHAIN' include 'COMMON.DERIV' include 'COMMON.INTERACT' include 'COMMON.CONTACTS' include 'COMMON.TORSION' include 'COMMON.VECTORS' include 'COMMON.FFIELD' dimension ggg(3),gggp(3),gggm(3),erij(3),dcosb(3),dcosg(3), & erder(3,3),uryg(3,3),urzg(3,3),vryg(3,3),vrzg(3,3) double precision acipa(2,2),agg(3,4),aggi(3,4),aggi1(3,4), & aggj(3,4),aggj1(3,4),a_temp(2,2),muij(4) common /locel/ a_temp,agg,aggi,aggi1,aggj,aggj1,j1,j2 c 4/26/02 - AL scaling factor for 1,4 repulsive VDW interactions #ifdef MOMENT double precision scal_el /1.0d0/ #else double precision scal_el /0.5d0/ #endif C 12/13/98 C 13-go grudnia roku pamietnego... double precision unmat(3,3) /1.0d0,0.0d0,0.0d0, & 0.0d0,1.0d0,0.0d0, & 0.0d0,0.0d0,1.0d0/ cd write(iout,*) 'In EELEC' cd do i=1,nloctyp cd write(iout,*) 'Type',i cd write(iout,*) 'B1',B1(:,i) cd write(iout,*) 'B2',B2(:,i) cd write(iout,*) 'CC',CC(:,:,i) cd write(iout,*) 'DD',DD(:,:,i) cd write(iout,*) 'EE',EE(:,:,i) cd enddo cd call check_vecgrad cd stop if (icheckgrad.eq.1) then do i=1,nres-1 fac=1.0d0/dsqrt(scalar(dc(1,i),dc(1,i))) do k=1,3 dc_norm(k,i)=dc(k,i)*fac enddo c write (iout,*) 'i',i,' fac',fac enddo endif if (wel_loc.gt.0.0d0 .or. wcorr4.gt.0.0d0 .or. wcorr5.gt.0.0d0 & .or. wcorr6.gt.0.0d0 .or. wturn3.gt.0.0d0 .or. & wturn4.gt.0.0d0 .or. wturn6.gt.0.0d0) then c call vec_and_deriv call set_matrices endif cd do i=1,nres-1 cd write (iout,*) 'i=',i cd do k=1,3 cd write (iout,'(i5,2f10.5)') k,uy(k,i),uz(k,i) cd enddo cd do k=1,3 cd write (iout,'(f10.5,2x,3f10.5,2x,3f10.5)') cd & uz(k,i),(uzgrad(k,l,1,i),l=1,3),(uzgrad(k,l,2,i),l=1,3) cd enddo cd enddo num_conti_hb=0 ees=0.0D0 evdw1=0.0D0 eel_loc=0.0d0 eello_turn3=0.0d0 eello_turn4=0.0d0 ind=0 do i=1,nres num_cont_hb(i)=0 enddo cd print '(a)','Enter EELEC' cd write (iout,*) 'iatel_s=',iatel_s,' iatel_e=',iatel_e do i=1,nres gel_loc_loc(i)=0.0d0 gcorr_loc(i)=0.0d0 enddo do i=iatel_s,iatel_e dxi=dc(1,i) dyi=dc(2,i) dzi=dc(3,i) dx_normi=dc_norm(1,i) dy_normi=dc_norm(2,i) dz_normi=dc_norm(3,i) xmedi=c(1,i)+0.5d0*dxi ymedi=c(2,i)+0.5d0*dyi zmedi=c(3,i)+0.5d0*dzi num_conti=0 c write (iout,*) 'i',i,' ielstart',ielstart(i),' ielend',ielend(i) do j=ielstart(i),ielend(i) ind=ind+1 iteli=itel(i) itelj=itel(j) if (j.eq.i+2 .and. itelj.eq.2) iteli=2 aaa=app(iteli,itelj) bbb=bpp(iteli,itelj) ael6i=ael6(iteli,itelj) ael3i=ael3(iteli,itelj) C Diagnostics only!!! c aaa=0.0D0 c bbb=0.0D0 c ael6i=0.0D0 c ael3i=0.0D0 C End diagnostics dxj=dc(1,j) dyj=dc(2,j) dzj=dc(3,j) dx_normj=dc_norm(1,j) dy_normj=dc_norm(2,j) dz_normj=dc_norm(3,j) xj=c(1,j)+0.5D0*dxj-xmedi yj=c(2,j)+0.5D0*dyj-ymedi zj=c(3,j)+0.5D0*dzj-zmedi rij=xj*xj+yj*yj+zj*zj rrmij=1.0D0/rij rij=dsqrt(rij) rmij=1.0D0/rij c For extracting the short-range part of Evdwpp sss=sscale(rij/rpp(iteli,itelj)) c r3ij=rrmij*rmij r6ij=r3ij*r3ij cosa=dx_normi*dx_normj+dy_normi*dy_normj+dz_normi*dz_normj cosb=(xj*dx_normi+yj*dy_normi+zj*dz_normi)*rmij cosg=(xj*dx_normj+yj*dy_normj+zj*dz_normj)*rmij fac=cosa-3.0D0*cosb*cosg ev1=aaa*r6ij*r6ij c 4/26/02 - AL scaling down 1,4 repulsive VDW interactions if (j.eq.i+2) ev1=scal_el*ev1 ev2=bbb*r6ij fac3=ael6i*r6ij fac4=ael3i*r3ij evdwij=ev1+ev2 el1=fac3*(4.0D0+fac*fac-3.0D0*(cosb*cosb+cosg*cosg)) el2=fac4*fac eesij=el1+el2 C 12/26/95 - for the evaluation of multi-body H-bonding interactions ees0ij=4.0D0+fac*fac-3.0D0*(cosb*cosb+cosg*cosg) ees=ees+eesij evdw1=evdw1+evdwij*(1.0d0-sss) cd write(iout,'(2(2i3,2x),7(1pd12.4)/2(3(1pd12.4),5x)/)') cd & iteli,i,itelj,j,aaa,bbb,ael6i,ael3i, cd & 1.0D0/dsqrt(rrmij),evdwij,eesij, cd & xmedi,ymedi,zmedi,xj,yj,zj if (energy_dec) then write (iout,'(a6,2i5,0pf7.3)') 'evdw1',i,j,evdwij write (iout,'(a6,2i5,0pf7.3)') 'ees',i,j,eesij endif C C Calculate contributions to the Cartesian gradient. C #ifdef SPLITELE facvdw=-6*rrmij*(ev1+evdwij)*(1.0d0-sss) facel=-3*rrmij*(el1+eesij) fac1=fac erij(1)=xj*rmij erij(2)=yj*rmij erij(3)=zj*rmij * * Radial derivatives. First process both termini of the fragment (i,j) * ggg(1)=facel*xj ggg(2)=facel*yj ggg(3)=facel*zj do k=1,3 ghalf=0.5D0*ggg(k) gelc(k,i)=gelc(k,i)+ghalf gelc(k,j)=gelc(k,j)+ghalf enddo * * Loop over residues i+1 thru j-1. * do k=i+1,j-1 do l=1,3 gelc(l,k)=gelc(l,k)+ggg(l) enddo enddo ggg(1)=facvdw*xj ggg(2)=facvdw*yj ggg(3)=facvdw*zj do k=1,3 ghalf=0.5D0*ggg(k) gvdwpp(k,i)=gvdwpp(k,i)+ghalf gvdwpp(k,j)=gvdwpp(k,j)+ghalf enddo * * Loop over residues i+1 thru j-1. * do k=i+1,j-1 do l=1,3 gvdwpp(l,k)=gvdwpp(l,k)+ggg(l) enddo enddo #else facvdw=(ev1+evdwij)*(1.0d0-sss) facel=el1+eesij fac1=fac fac=-3*rrmij*(facvdw+facvdw+facel) erij(1)=xj*rmij erij(2)=yj*rmij erij(3)=zj*rmij * * Radial derivatives. First process both termini of the fragment (i,j) * ggg(1)=fac*xj ggg(2)=fac*yj ggg(3)=fac*zj do k=1,3 ghalf=0.5D0*ggg(k) gelc(k,i)=gelc(k,i)+ghalf gelc(k,j)=gelc(k,j)+ghalf enddo * * Loop over residues i+1 thru j-1. * do k=i+1,j-1 do l=1,3 gelc(l,k)=gelc(l,k)+ggg(l) enddo enddo #endif * * Angular part * ecosa=2.0D0*fac3*fac1+fac4 fac4=-3.0D0*fac4 fac3=-6.0D0*fac3 ecosb=(fac3*(fac1*cosg+cosb)+cosg*fac4) ecosg=(fac3*(fac1*cosb+cosg)+cosb*fac4) do k=1,3 dcosb(k)=rmij*(dc_norm(k,i)-erij(k)*cosb) dcosg(k)=rmij*(dc_norm(k,j)-erij(k)*cosg) enddo cd print '(2i3,2(3(1pd14.5),3x))',i,j,(dcosb(k),k=1,3), cd & (dcosg(k),k=1,3) do k=1,3 ggg(k)=ecosb*dcosb(k)+ecosg*dcosg(k) enddo do k=1,3 ghalf=0.5D0*ggg(k) gelc(k,i)=gelc(k,i)+ghalf & +(ecosa*(dc_norm(k,j)-cosa*dc_norm(k,i)) & + ecosb*(erij(k)-cosb*dc_norm(k,i)))*vbld_inv(i+1) gelc(k,j)=gelc(k,j)+ghalf & +(ecosa*(dc_norm(k,i)-cosa*dc_norm(k,j)) & + ecosg*(erij(k)-cosg*dc_norm(k,j)))*vbld_inv(j+1) enddo do k=i+1,j-1 do l=1,3 gelc(l,k)=gelc(l,k)+ggg(l) enddo enddo IF (wel_loc.gt.0.0d0 .or. wcorr4.gt.0.0d0 .or. wcorr5.gt.0.0d0 & .or. wcorr6.gt.0.0d0 .or. wturn3.gt.0.0d0 & .or. wturn4.gt.0.0d0 .or. wturn6.gt.0.0d0) THEN C C 9/25/99 Mixed third-order local-electrostatic terms. The local-interaction C energy of a peptide unit is assumed in the form of a second-order C Fourier series in the angles lambda1 and lambda2 (see Nishikawa et al. C Macromolecules, 1974, 7, 797-806 for definition). This correlation terms C are computed for EVERY pair of non-contiguous peptide groups. C if (j.lt.nres-1) then j1=j+1 j2=j-1 else j1=j-1 j2=j-2 endif kkk=0 do k=1,2 do l=1,2 kkk=kkk+1 muij(kkk)=mu(k,i)*mu(l,j) enddo enddo cd write (iout,*) 'EELEC: i',i,' j',j cd write (iout,*) 'j',j,' j1',j1,' j2',j2 cd write(iout,*) 'muij',muij ury=scalar(uy(1,i),erij) urz=scalar(uz(1,i),erij) vry=scalar(uy(1,j),erij) vrz=scalar(uz(1,j),erij) a22=scalar(uy(1,i),uy(1,j))-3*ury*vry a23=scalar(uy(1,i),uz(1,j))-3*ury*vrz a32=scalar(uz(1,i),uy(1,j))-3*urz*vry a33=scalar(uz(1,i),uz(1,j))-3*urz*vrz C For diagnostics only cd a22=1.0d0 cd a23=1.0d0 cd a32=1.0d0 cd a33=1.0d0 fac=dsqrt(-ael6i)*r3ij cd write (2,*) 'fac=',fac C For diagnostics only cd fac=1.0d0 a22=a22*fac a23=a23*fac a32=a32*fac a33=a33*fac cd write (iout,'(4i5,4f10.5)') cd & i,itortyp(itype(i)),j,itortyp(itype(j)),a22,a23,a32,a33 cd write (iout,'(6f10.5)') (muij(k),k=1,4),fac,eel_loc_ij cd write (iout,'(2(3f10.5,5x)/2(3f10.5,5x))') uy(:,i),uz(:,i), cd & uy(:,j),uz(:,j) cd write (iout,'(4f10.5)') cd & scalar(uy(1,i),uy(1,j)),scalar(uy(1,i),uz(1,j)), cd & scalar(uz(1,i),uy(1,j)),scalar(uz(1,i),uz(1,j)) cd write (iout,'(4f10.5)') ury,urz,vry,vrz cd write (iout,'(9f10.5/)') cd & fac22,a22,fac23,a23,fac32,a32,fac33,a33,eel_loc_ij C Derivatives of the elements of A in virtual-bond vectors call unormderiv(erij(1),unmat(1,1),rmij,erder(1,1)) cd do k=1,3 cd do l=1,3 cd erder(k,l)=0.0d0 cd enddo cd enddo do k=1,3 uryg(k,1)=scalar(erder(1,k),uy(1,i)) uryg(k,2)=scalar(uygrad(1,k,1,i),erij(1)) uryg(k,3)=scalar(uygrad(1,k,2,i),erij(1)) urzg(k,1)=scalar(erder(1,k),uz(1,i)) urzg(k,2)=scalar(uzgrad(1,k,1,i),erij(1)) urzg(k,3)=scalar(uzgrad(1,k,2,i),erij(1)) vryg(k,1)=scalar(erder(1,k),uy(1,j)) vryg(k,2)=scalar(uygrad(1,k,1,j),erij(1)) vryg(k,3)=scalar(uygrad(1,k,2,j),erij(1)) vrzg(k,1)=scalar(erder(1,k),uz(1,j)) vrzg(k,2)=scalar(uzgrad(1,k,1,j),erij(1)) vrzg(k,3)=scalar(uzgrad(1,k,2,j),erij(1)) enddo cd do k=1,3 cd do l=1,3 cd uryg(k,l)=0.0d0 cd urzg(k,l)=0.0d0 cd vryg(k,l)=0.0d0 cd vrzg(k,l)=0.0d0 cd enddo cd enddo C Compute radial contributions to the gradient facr=-3.0d0*rrmij a22der=a22*facr a23der=a23*facr a32der=a32*facr a33der=a33*facr cd a22der=0.0d0 cd a23der=0.0d0 cd a32der=0.0d0 cd a33der=0.0d0 agg(1,1)=a22der*xj agg(2,1)=a22der*yj agg(3,1)=a22der*zj agg(1,2)=a23der*xj agg(2,2)=a23der*yj agg(3,2)=a23der*zj agg(1,3)=a32der*xj agg(2,3)=a32der*yj agg(3,3)=a32der*zj agg(1,4)=a33der*xj agg(2,4)=a33der*yj agg(3,4)=a33der*zj C Add the contributions coming from er fac3=-3.0d0*fac do k=1,3 agg(k,1)=agg(k,1)+fac3*(uryg(k,1)*vry+vryg(k,1)*ury) agg(k,2)=agg(k,2)+fac3*(uryg(k,1)*vrz+vrzg(k,1)*ury) agg(k,3)=agg(k,3)+fac3*(urzg(k,1)*vry+vryg(k,1)*urz) agg(k,4)=agg(k,4)+fac3*(urzg(k,1)*vrz+vrzg(k,1)*urz) enddo do k=1,3 C Derivatives in DC(i) ghalf1=0.5d0*agg(k,1) ghalf2=0.5d0*agg(k,2) ghalf3=0.5d0*agg(k,3) ghalf4=0.5d0*agg(k,4) aggi(k,1)=fac*(scalar(uygrad(1,k,1,i),uy(1,j)) & -3.0d0*uryg(k,2)*vry)+ghalf1 aggi(k,2)=fac*(scalar(uygrad(1,k,1,i),uz(1,j)) & -3.0d0*uryg(k,2)*vrz)+ghalf2 aggi(k,3)=fac*(scalar(uzgrad(1,k,1,i),uy(1,j)) & -3.0d0*urzg(k,2)*vry)+ghalf3 aggi(k,4)=fac*(scalar(uzgrad(1,k,1,i),uz(1,j)) & -3.0d0*urzg(k,2)*vrz)+ghalf4 C Derivatives in DC(i+1) aggi1(k,1)=fac*(scalar(uygrad(1,k,2,i),uy(1,j)) & -3.0d0*uryg(k,3)*vry)+agg(k,1) aggi1(k,2)=fac*(scalar(uygrad(1,k,2,i),uz(1,j)) & -3.0d0*uryg(k,3)*vrz)+agg(k,2) aggi1(k,3)=fac*(scalar(uzgrad(1,k,2,i),uy(1,j)) & -3.0d0*urzg(k,3)*vry)+agg(k,3) aggi1(k,4)=fac*(scalar(uzgrad(1,k,2,i),uz(1,j)) & -3.0d0*urzg(k,3)*vrz)+agg(k,4) C Derivatives in DC(j) aggj(k,1)=fac*(scalar(uygrad(1,k,1,j),uy(1,i)) & -3.0d0*vryg(k,2)*ury)+ghalf1 aggj(k,2)=fac*(scalar(uzgrad(1,k,1,j),uy(1,i)) & -3.0d0*vrzg(k,2)*ury)+ghalf2 aggj(k,3)=fac*(scalar(uygrad(1,k,1,j),uz(1,i)) & -3.0d0*vryg(k,2)*urz)+ghalf3 aggj(k,4)=fac*(scalar(uzgrad(1,k,1,j),uz(1,i)) & -3.0d0*vrzg(k,2)*urz)+ghalf4 C Derivatives in DC(j+1) or DC(nres-1) aggj1(k,1)=fac*(scalar(uygrad(1,k,2,j),uy(1,i)) & -3.0d0*vryg(k,3)*ury) aggj1(k,2)=fac*(scalar(uzgrad(1,k,2,j),uy(1,i)) & -3.0d0*vrzg(k,3)*ury) aggj1(k,3)=fac*(scalar(uygrad(1,k,2,j),uz(1,i)) & -3.0d0*vryg(k,3)*urz) aggj1(k,4)=fac*(scalar(uzgrad(1,k,2,j),uz(1,i)) & -3.0d0*vrzg(k,3)*urz) cd aggi(k,1)=ghalf1 cd aggi(k,2)=ghalf2 cd aggi(k,3)=ghalf3 cd aggi(k,4)=ghalf4 C Derivatives in DC(i+1) cd aggi1(k,1)=agg(k,1) cd aggi1(k,2)=agg(k,2) cd aggi1(k,3)=agg(k,3) cd aggi1(k,4)=agg(k,4) C Derivatives in DC(j) cd aggj(k,1)=ghalf1 cd aggj(k,2)=ghalf2 cd aggj(k,3)=ghalf3 cd aggj(k,4)=ghalf4 C Derivatives in DC(j+1) cd aggj1(k,1)=0.0d0 cd aggj1(k,2)=0.0d0 cd aggj1(k,3)=0.0d0 cd aggj1(k,4)=0.0d0 if (j.eq.nres-1 .and. i.lt.j-2) then do l=1,4 aggj1(k,l)=aggj1(k,l)+agg(k,l) cd aggj1(k,l)=agg(k,l) enddo endif enddo c goto 11111 C Check the loc-el terms by numerical integration acipa(1,1)=a22 acipa(1,2)=a23 acipa(2,1)=a32 acipa(2,2)=a33 a22=-a22 a23=-a23 do l=1,2 do k=1,3 agg(k,l)=-agg(k,l) aggi(k,l)=-aggi(k,l) aggi1(k,l)=-aggi1(k,l) aggj(k,l)=-aggj(k,l) aggj1(k,l)=-aggj1(k,l) enddo enddo if (j.lt.nres-1) then a22=-a22 a32=-a32 do l=1,3,2 do k=1,3 agg(k,l)=-agg(k,l) aggi(k,l)=-aggi(k,l) aggi1(k,l)=-aggi1(k,l) aggj(k,l)=-aggj(k,l) aggj1(k,l)=-aggj1(k,l) enddo enddo else a22=-a22 a23=-a23 a32=-a32 a33=-a33 do l=1,4 do k=1,3 agg(k,l)=-agg(k,l) aggi(k,l)=-aggi(k,l) aggi1(k,l)=-aggi1(k,l) aggj(k,l)=-aggj(k,l) aggj1(k,l)=-aggj1(k,l) enddo enddo endif ENDIF ! WCORR 11111 continue IF (wel_loc.gt.0.0d0) THEN C Contribution to the local-electrostatic energy coming from the i-j pair eel_loc_ij=a22*muij(1)+a23*muij(2)+a32*muij(3) & +a33*muij(4) cd write (iout,*) 'i',i,' j',j,' eel_loc_ij',eel_loc_ij if (energy_dec) write (iout,'(a6,2i5,0pf7.3)') & 'eelloc',i,j,eel_loc_ij eel_loc=eel_loc+eel_loc_ij C Partial derivatives in virtual-bond dihedral angles gamma if (i.gt.1) & gel_loc_loc(i-1)=gel_loc_loc(i-1)+ & a22*muder(1,i)*mu(1,j)+a23*muder(1,i)*mu(2,j) & +a32*muder(2,i)*mu(1,j)+a33*muder(2,i)*mu(2,j) gel_loc_loc(j-1)=gel_loc_loc(j-1)+ & a22*mu(1,i)*muder(1,j)+a23*mu(1,i)*muder(2,j) & +a32*mu(2,i)*muder(1,j)+a33*mu(2,i)*muder(2,j) cd call checkint3(i,j,mu1,mu2,a22,a23,a32,a33,acipa,eel_loc_ij) cd write(iout,*) 'agg ',agg cd write(iout,*) 'aggi ',aggi cd write(iout,*) 'aggi1',aggi1 cd write(iout,*) 'aggj ',aggj cd write(iout,*) 'aggj1',aggj1 C Derivatives of eello in DC(i+1) thru DC(j-1) or DC(nres-2) do l=1,3 ggg(l)=agg(l,1)*muij(1)+ & agg(l,2)*muij(2)+agg(l,3)*muij(3)+agg(l,4)*muij(4) enddo do k=i+2,j2 do l=1,3 gel_loc(l,k)=gel_loc(l,k)+ggg(l) enddo enddo C Remaining derivatives of eello do l=1,3 gel_loc(l,i)=gel_loc(l,i)+aggi(l,1)*muij(1)+ & aggi(l,2)*muij(2)+aggi(l,3)*muij(3)+aggi(l,4)*muij(4) gel_loc(l,i+1)=gel_loc(l,i+1)+aggi1(l,1)*muij(1)+ & aggi1(l,2)*muij(2)+aggi1(l,3)*muij(3)+aggi1(l,4)*muij(4) gel_loc(l,j)=gel_loc(l,j)+aggj(l,1)*muij(1)+ & aggj(l,2)*muij(2)+aggj(l,3)*muij(3)+aggj(l,4)*muij(4) gel_loc(l,j1)=gel_loc(l,j1)+aggj1(l,1)*muij(1)+ & aggj1(l,2)*muij(2)+aggj1(l,3)*muij(3)+aggj1(l,4)*muij(4) enddo ENDIF if (wturn3.gt.0.0d0 .or. wturn4.gt.0.0d0) then C Contributions from turns a_temp(1,1)=a22 a_temp(1,2)=a23 a_temp(2,1)=a32 a_temp(2,2)=a33 call eturn34(i,j,eello_turn3,eello_turn4) endif C Change 12/26/95 to calculate four-body contributions to H-bonding energy if (j.gt.i+1 .and. num_conti.le.maxconts) then C C Calculate the contact function. The ith column of the array JCONT will C contain the numbers of atoms that make contacts with the atom I (of numbers C greater than I). The arrays FACONT and GACONT will contain the values of C the contact function and its derivative. c r0ij=1.02D0*rpp(iteli,itelj) c r0ij=1.11D0*rpp(iteli,itelj) r0ij=2.20D0*rpp(iteli,itelj) c r0ij=1.55D0*rpp(iteli,itelj) call gcont(rij,r0ij,1.0D0,0.2d0*r0ij,fcont,fprimcont) if (fcont.gt.0.0D0) then num_conti=num_conti+1 if (num_conti.gt.maxconts) then write (iout,*) 'WARNING - max. # of contacts exceeded;', & ' will skip next contacts for this conf.' else jcont_hb(num_conti,i)=j IF (wcorr4.gt.0.0d0 .or. wcorr5.gt.0.0d0 .or. & wcorr6.gt.0.0d0 .or. wturn6.gt.0.0d0) THEN C 9/30/99 (AL) - store components necessary to evaluate higher-order loc-el C terms. d_cont(num_conti,i)=rij cd write (2,'(3e15.5)') rij,r0ij+0.2d0*r0ij,rij C --- Electrostatic-interaction matrix --- a_chuj(1,1,num_conti,i)=a22 a_chuj(1,2,num_conti,i)=a23 a_chuj(2,1,num_conti,i)=a32 a_chuj(2,2,num_conti,i)=a33 C --- Gradient of rij do kkk=1,3 grij_hb_cont(kkk,num_conti,i)=erij(kkk) enddo c if (i.eq.1) then c a_chuj(1,1,num_conti,i)=-0.61d0 c a_chuj(1,2,num_conti,i)= 0.4d0 c a_chuj(2,1,num_conti,i)= 0.65d0 c a_chuj(2,2,num_conti,i)= 0.50d0 c else if (i.eq.2) then c a_chuj(1,1,num_conti,i)= 0.0d0 c a_chuj(1,2,num_conti,i)= 0.0d0 c a_chuj(2,1,num_conti,i)= 0.0d0 c a_chuj(2,2,num_conti,i)= 0.0d0 c endif C --- and its gradients cd write (iout,*) 'i',i,' j',j cd do kkk=1,3 cd write (iout,*) 'iii 1 kkk',kkk cd write (iout,*) agg(kkk,:) cd enddo cd do kkk=1,3 cd write (iout,*) 'iii 2 kkk',kkk cd write (iout,*) aggi(kkk,:) cd enddo cd do kkk=1,3 cd write (iout,*) 'iii 3 kkk',kkk cd write (iout,*) aggi1(kkk,:) cd enddo cd do kkk=1,3 cd write (iout,*) 'iii 4 kkk',kkk cd write (iout,*) aggj(kkk,:) cd enddo cd do kkk=1,3 cd write (iout,*) 'iii 5 kkk',kkk cd write (iout,*) aggj1(kkk,:) cd enddo kkll=0 do k=1,2 do l=1,2 kkll=kkll+1 do m=1,3 a_chuj_der(k,l,m,1,num_conti,i)=agg(m,kkll) a_chuj_der(k,l,m,2,num_conti,i)=aggi(m,kkll) a_chuj_der(k,l,m,3,num_conti,i)=aggi1(m,kkll) a_chuj_der(k,l,m,4,num_conti,i)=aggj(m,kkll) a_chuj_der(k,l,m,5,num_conti,i)=aggj1(m,kkll) c do mm=1,5 c a_chuj_der(k,l,m,mm,num_conti,i)=0.0d0 c enddo enddo enddo enddo ENDIF IF (wcorr4.eq.0.0d0 .and. wcorr.gt.0.0d0) THEN C Calculate contact energies cosa4=4.0D0*cosa wij=cosa-3.0D0*cosb*cosg cosbg1=cosb+cosg cosbg2=cosb-cosg c fac3=dsqrt(-ael6i)/r0ij**3 fac3=dsqrt(-ael6i)*r3ij c ees0pij=dsqrt(4.0D0+cosa4+wij*wij-3.0D0*cosbg1*cosbg1) ees0tmp=4.0D0+cosa4+wij*wij-3.0D0*cosbg1*cosbg1 if (ees0tmp.gt.0) then ees0pij=dsqrt(ees0tmp) else ees0pij=0 endif c ees0mij=dsqrt(4.0D0-cosa4+wij*wij-3.0D0*cosbg2*cosbg2) ees0tmp=4.0D0-cosa4+wij*wij-3.0D0*cosbg2*cosbg2 if (ees0tmp.gt.0) then ees0mij=dsqrt(ees0tmp) else ees0mij=0 endif c ees0mij=0.0D0 ees0p(num_conti,i)=0.5D0*fac3*(ees0pij+ees0mij) ees0m(num_conti,i)=0.5D0*fac3*(ees0pij-ees0mij) C Diagnostics. Comment out or remove after debugging! c ees0p(num_conti,i)=0.5D0*fac3*ees0pij c ees0m(num_conti,i)=0.5D0*fac3*ees0mij c ees0m(num_conti,i)=0.0D0 C End diagnostics. c write (iout,*) 'i=',i,' j=',j,' rij=',rij,' r0ij=',r0ij, c & ' ees0ij=',ees0p(num_conti,i),ees0m(num_conti,i),' fcont=',fcont C Angular derivatives of the contact function ees0pij1=fac3/ees0pij ees0mij1=fac3/ees0mij fac3p=-3.0D0*fac3*rrmij ees0pijp=0.5D0*fac3p*(ees0pij+ees0mij) ees0mijp=0.5D0*fac3p*(ees0pij-ees0mij) c ees0mij1=0.0D0 ecosa1= ees0pij1*( 1.0D0+0.5D0*wij) ecosb1=-1.5D0*ees0pij1*(wij*cosg+cosbg1) ecosg1=-1.5D0*ees0pij1*(wij*cosb+cosbg1) ecosa2= ees0mij1*(-1.0D0+0.5D0*wij) ecosb2=-1.5D0*ees0mij1*(wij*cosg+cosbg2) ecosg2=-1.5D0*ees0mij1*(wij*cosb-cosbg2) ecosap=ecosa1+ecosa2 ecosbp=ecosb1+ecosb2 ecosgp=ecosg1+ecosg2 ecosam=ecosa1-ecosa2 ecosbm=ecosb1-ecosb2 ecosgm=ecosg1-ecosg2 C Diagnostics c ecosap=ecosa1 c ecosbp=ecosb1 c ecosgp=ecosg1 c ecosam=0.0D0 c ecosbm=0.0D0 c ecosgm=0.0D0 C End diagnostics facont_hb(num_conti,i)=fcont fprimcont=fprimcont/rij cd facont_hb(num_conti,i)=1.0D0 C Following line is for diagnostics. cd fprimcont=0.0D0 do k=1,3 dcosb(k)=rmij*(dc_norm(k,i)-erij(k)*cosb) dcosg(k)=rmij*(dc_norm(k,j)-erij(k)*cosg) enddo do k=1,3 gggp(k)=ecosbp*dcosb(k)+ecosgp*dcosg(k) gggm(k)=ecosbm*dcosb(k)+ecosgm*dcosg(k) enddo gggp(1)=gggp(1)+ees0pijp*xj gggp(2)=gggp(2)+ees0pijp*yj gggp(3)=gggp(3)+ees0pijp*zj gggm(1)=gggm(1)+ees0mijp*xj gggm(2)=gggm(2)+ees0mijp*yj gggm(3)=gggm(3)+ees0mijp*zj C Derivatives due to the contact function gacont_hbr(1,num_conti,i)=fprimcont*xj gacont_hbr(2,num_conti,i)=fprimcont*yj gacont_hbr(3,num_conti,i)=fprimcont*zj do k=1,3 ghalfp=0.5D0*gggp(k) ghalfm=0.5D0*gggm(k) gacontp_hb1(k,num_conti,i)=ghalfp & +(ecosap*(dc_norm(k,j)-cosa*dc_norm(k,i)) & + ecosbp*(erij(k)-cosb*dc_norm(k,i)))*vbld_inv(i+1) gacontp_hb2(k,num_conti,i)=ghalfp & +(ecosap*(dc_norm(k,i)-cosa*dc_norm(k,j)) & + ecosgp*(erij(k)-cosg*dc_norm(k,j)))*vbld_inv(j+1) gacontp_hb3(k,num_conti,i)=gggp(k) gacontm_hb1(k,num_conti,i)=ghalfm & +(ecosam*(dc_norm(k,j)-cosa*dc_norm(k,i)) & + ecosbm*(erij(k)-cosb*dc_norm(k,i)))*vbld_inv(i+1) gacontm_hb2(k,num_conti,i)=ghalfm & +(ecosam*(dc_norm(k,i)-cosa*dc_norm(k,j)) & + ecosgm*(erij(k)-cosg*dc_norm(k,j)))*vbld_inv(j+1) gacontm_hb3(k,num_conti,i)=gggm(k) enddo C Diagnostics. Comment out or remove after debugging! cdiag do k=1,3 cdiag gacontp_hb1(k,num_conti,i)=0.0D0 cdiag gacontp_hb2(k,num_conti,i)=0.0D0 cdiag gacontp_hb3(k,num_conti,i)=0.0D0 cdiag gacontm_hb1(k,num_conti,i)=0.0D0 cdiag gacontm_hb2(k,num_conti,i)=0.0D0 cdiag gacontm_hb3(k,num_conti,i)=0.0D0 cdiag enddo ENDIF ! wcorr endif ! num_conti.le.maxconts endif ! fcont.gt.0 endif ! j.gt.i+1 enddo ! j num_cont_hb(i)=num_conti enddo ! i cd do i=1,nres cd write (iout,'(i3,3f10.5,5x,3f10.5)') cd & i,(gel_loc(k,i),k=1,3),gel_loc_loc(i) cd enddo c 12/7/99 Adam eello_turn3 will be considered as a separate energy term ccc eel_loc=eel_loc+eello_turn3 return end C----------------------------------------------------------------------- subroutine evdwpp_long(evdw1) C C Compute Evdwpp C implicit real*8 (a-h,o-z) include 'DIMENSIONS' include 'COMMON.CONTROL' include 'COMMON.IOUNITS' include 'COMMON.GEO' include 'COMMON.VAR' include 'COMMON.LOCAL' include 'COMMON.CHAIN' include 'COMMON.DERIV' include 'COMMON.INTERACT' include 'COMMON.CONTACTS' include 'COMMON.TORSION' include 'COMMON.VECTORS' include 'COMMON.FFIELD' dimension ggg(3) c 4/26/02 - AL scaling factor for 1,4 repulsive VDW interactions #ifdef MOMENT double precision scal_el /1.0d0/ #else double precision scal_el /0.5d0/ #endif evdw1=0.0D0 do i=iatel_s,iatel_e dxi=dc(1,i) dyi=dc(2,i) dzi=dc(3,i) dx_normi=dc_norm(1,i) dy_normi=dc_norm(2,i) dz_normi=dc_norm(3,i) xmedi=c(1,i)+0.5d0*dxi ymedi=c(2,i)+0.5d0*dyi zmedi=c(3,i)+0.5d0*dzi num_conti=0 c write (iout,*) 'i',i,' ielstart',ielstart(i),' ielend',ielend(i) do j=ielstart(i),ielend(i) ind=ind+1 iteli=itel(i) itelj=itel(j) if (j.eq.i+2 .and. itelj.eq.2) iteli=2 aaa=app(iteli,itelj) bbb=bpp(iteli,itelj) dxj=dc(1,j) dyj=dc(2,j) dzj=dc(3,j) dx_normj=dc_norm(1,j) dy_normj=dc_norm(2,j) dz_normj=dc_norm(3,j) xj=c(1,j)+0.5D0*dxj-xmedi yj=c(2,j)+0.5D0*dyj-ymedi zj=c(3,j)+0.5D0*dzj-zmedi rij=xj*xj+yj*yj+zj*zj rrmij=1.0D0/rij rij=dsqrt(rij) sss=sscale(rij/rpp(iteli,itelj)) if (sss.lt.1.0d0) then rmij=1.0D0/rij r3ij=rrmij*rmij r6ij=r3ij*r3ij ev1=aaa*r6ij*r6ij c 4/26/02 - AL scaling down 1,4 repulsive VDW interactions if (j.eq.i+2) ev1=scal_el*ev1 ev2=bbb*r6ij evdwij=ev1+ev2 if (energy_dec) then write (iout,'(a6,2i5,0pf7.3)') 'evdw1',i,j,evdwij write (iout,'(a6,2i5,0pf7.3)') 'ees',i,j,eesij endif evdw1=evdw1+evdwij*(1.0d0-sss) C C Calculate contributions to the Cartesian gradient. C facvdw=-6*rrmij*(ev1+evdwij)*(1.0d0-sss) ggg(1)=facvdw*xj ggg(2)=facvdw*yj ggg(3)=facvdw*zj do k=1,3 ghalf=0.5D0*ggg(k) gvdwpp(k,i)=gvdwpp(k,i)+ghalf gvdwpp(k,j)=gvdwpp(k,j)+ghalf enddo * * Loop over residues i+1 thru j-1. * do k=i+1,j-1 do l=1,3 gvdwpp(l,k)=gvdwpp(l,k)+ggg(l) enddo enddo endif enddo ! j enddo ! i return end C----------------------------------------------------------------------- subroutine evdwpp_short(evdw1) C C Compute Evdwpp C implicit real*8 (a-h,o-z) include 'DIMENSIONS' include 'COMMON.CONTROL' include 'COMMON.IOUNITS' include 'COMMON.GEO' include 'COMMON.VAR' include 'COMMON.LOCAL' include 'COMMON.CHAIN' include 'COMMON.DERIV' include 'COMMON.INTERACT' include 'COMMON.CONTACTS' include 'COMMON.TORSION' include 'COMMON.VECTORS' include 'COMMON.FFIELD' dimension ggg(3) c 4/26/02 - AL scaling factor for 1,4 repulsive VDW interactions #ifdef MOMENT double precision scal_el /1.0d0/ #else double precision scal_el /0.5d0/ #endif evdw1=0.0D0 do i=iatel_s,iatel_e dxi=dc(1,i) dyi=dc(2,i) dzi=dc(3,i) dx_normi=dc_norm(1,i) dy_normi=dc_norm(2,i) dz_normi=dc_norm(3,i) xmedi=c(1,i)+0.5d0*dxi ymedi=c(2,i)+0.5d0*dyi zmedi=c(3,i)+0.5d0*dzi num_conti=0 c write (iout,*) 'i',i,' ielstart',ielstart(i),' ielend',ielend(i) do j=ielstart(i),ielend(i) ind=ind+1 iteli=itel(i) itelj=itel(j) if (j.eq.i+2 .and. itelj.eq.2) iteli=2 aaa=app(iteli,itelj) bbb=bpp(iteli,itelj) dxj=dc(1,j) dyj=dc(2,j) dzj=dc(3,j) dx_normj=dc_norm(1,j) dy_normj=dc_norm(2,j) dz_normj=dc_norm(3,j) xj=c(1,j)+0.5D0*dxj-xmedi yj=c(2,j)+0.5D0*dyj-ymedi zj=c(3,j)+0.5D0*dzj-zmedi rij=xj*xj+yj*yj+zj*zj rrmij=1.0D0/rij rij=dsqrt(rij) sss=sscale(rij/rpp(iteli,itelj)) if (sss.gt.0.0d0) then rmij=1.0D0/rij r3ij=rrmij*rmij r6ij=r3ij*r3ij ev1=aaa*r6ij*r6ij c 4/26/02 - AL scaling down 1,4 repulsive VDW interactions if (j.eq.i+2) ev1=scal_el*ev1 ev2=bbb*r6ij evdwij=ev1+ev2 if (energy_dec) then write (iout,'(a6,2i5,0pf7.3)') 'evdw1',i,j,evdwij write (iout,'(a6,2i5,0pf7.3)') 'ees',i,j,eesij endif evdw1=evdw1+evdwij*sss C C Calculate contributions to the Cartesian gradient. C facvdw=-6*rrmij*(ev1+evdwij)*sss ggg(1)=facvdw*xj ggg(2)=facvdw*yj ggg(3)=facvdw*zj do k=1,3 ghalf=0.5D0*ggg(k) gvdwpp(k,i)=gvdwpp(k,i)+ghalf gvdwpp(k,j)=gvdwpp(k,j)+ghalf enddo * * Loop over residues i+1 thru j-1. * do k=i+1,j-1 do l=1,3 gvdwpp(l,k)=gvdwpp(l,k)+ggg(l) enddo enddo endif enddo ! j enddo ! i return end C----------------------------------------------------------------------------- subroutine escp_long(evdw2,evdw2_14) C C This subroutine calculates the excluded-volume interaction energy between C peptide-group centers and side chains and its gradient in virtual-bond and C side-chain vectors. C implicit real*8 (a-h,o-z) include 'DIMENSIONS' include 'COMMON.GEO' include 'COMMON.VAR' include 'COMMON.LOCAL' include 'COMMON.CHAIN' include 'COMMON.DERIV' include 'COMMON.INTERACT' include 'COMMON.FFIELD' include 'COMMON.IOUNITS' include 'COMMON.CONTROL' dimension ggg(3) evdw2=0.0D0 evdw2_14=0.0d0 cd print '(a)','Enter ESCP' cd write (iout,*) 'iatscp_s=',iatscp_s,' iatscp_e=',iatscp_e do i=iatscp_s,iatscp_e iteli=itel(i) xi=0.5D0*(c(1,i)+c(1,i+1)) yi=0.5D0*(c(2,i)+c(2,i+1)) zi=0.5D0*(c(3,i)+c(3,i+1)) do iint=1,nscp_gr(i) do j=iscpstart(i,iint),iscpend(i,iint) itypj=itype(j) C Uncomment following three lines for SC-p interactions c xj=c(1,nres+j)-xi c yj=c(2,nres+j)-yi c zj=c(3,nres+j)-zi C Uncomment following three lines for Ca-p interactions xj=c(1,j)-xi yj=c(2,j)-yi zj=c(3,j)-zi rrij=1.0D0/(xj*xj+yj*yj+zj*zj) sss=sscale(1.0d0/(dsqrt(rrij)*rscp(itypj,iteli))) if (sss.lt.1.0d0) then fac=rrij**expon2 e1=fac*fac*aad(itypj,iteli) e2=fac*bad(itypj,iteli) if (iabs(j-i) .le. 2) then e1=scal14*e1 e2=scal14*e2 evdw2_14=evdw2_14+(e1+e2)*(1.0d0-sss) endif evdwij=e1+e2 evdw2=evdw2+evdwij*(1.0d0-sss) if (energy_dec) write (iout,'(a6,2i5,0pf7.3)') & 'evdw2',i,j,evdwij C C Calculate contributions to the gradient in the virtual-bond and SC vectors. C fac=-(evdwij+e1)*rrij*(1.0d0-sss) ggg(1)=xj*fac ggg(2)=yj*fac ggg(3)=zj*fac if (j.lt.i) then cd write (iout,*) 'ji' do k=1,3 ggg(k)=-ggg(k) C Uncomment following line for SC-p interactions c gradx_scp(k,j)=gradx_scp(k,j)-ggg(k) enddo endif do k=1,3 gvdwc_scp(k,i)=gvdwc_scp(k,i)-0.5D0*ggg(k) enddo kstart=min0(i+1,j) kend=max0(i-1,j-1) cd write (iout,*) 'i=',i,' j=',j,' kstart=',kstart,' kend=',kend cd write (iout,*) ggg(1),ggg(2),ggg(3) do k=kstart,kend do l=1,3 gvdwc_scp(l,k)=gvdwc_scp(l,k)-ggg(l) enddo enddo endif enddo enddo ! iint enddo ! i do i=1,nct do j=1,3 gvdwc_scp(j,i)=expon*gvdwc_scp(j,i) gradx_scp(j,i)=expon*gradx_scp(j,i) enddo enddo C****************************************************************************** C C N O T E !!! C C To save time the factor EXPON has been extracted from ALL components C of GVDWC and GRADX. Remember to multiply them by this factor before further C use! C C****************************************************************************** return end C----------------------------------------------------------------------------- subroutine escp_short(evdw2,evdw2_14) C C This subroutine calculates the excluded-volume interaction energy between C peptide-group centers and side chains and its gradient in virtual-bond and C side-chain vectors. C implicit real*8 (a-h,o-z) include 'DIMENSIONS' include 'COMMON.GEO' include 'COMMON.VAR' include 'COMMON.LOCAL' include 'COMMON.CHAIN' include 'COMMON.DERIV' include 'COMMON.INTERACT' include 'COMMON.FFIELD' include 'COMMON.IOUNITS' include 'COMMON.CONTROL' dimension ggg(3) evdw2=0.0D0 evdw2_14=0.0d0 cd print '(a)','Enter ESCP' cd write (iout,*) 'iatscp_s=',iatscp_s,' iatscp_e=',iatscp_e do i=iatscp_s,iatscp_e iteli=itel(i) xi=0.5D0*(c(1,i)+c(1,i+1)) yi=0.5D0*(c(2,i)+c(2,i+1)) zi=0.5D0*(c(3,i)+c(3,i+1)) do iint=1,nscp_gr(i) do j=iscpstart(i,iint),iscpend(i,iint) itypj=itype(j) C Uncomment following three lines for SC-p interactions c xj=c(1,nres+j)-xi c yj=c(2,nres+j)-yi c zj=c(3,nres+j)-zi C Uncomment following three lines for Ca-p interactions xj=c(1,j)-xi yj=c(2,j)-yi zj=c(3,j)-zi rrij=1.0D0/(xj*xj+yj*yj+zj*zj) sss=sscale(1.0d0/(dsqrt(rrij)*rscp(itypj,iteli))) if (sss.gt.0.0d0) then fac=rrij**expon2 e1=fac*fac*aad(itypj,iteli) e2=fac*bad(itypj,iteli) if (iabs(j-i) .le. 2) then e1=scal14*e1 e2=scal14*e2 evdw2_14=evdw2_14+(e1+e2)*sss endif evdwij=e1+e2 evdw2=evdw2+evdwij*sss if (energy_dec) write (iout,'(a6,2i5,0pf7.3)') & 'evdw2',i,j,evdwij C C Calculate contributions to the gradient in the virtual-bond and SC vectors. C fac=-(evdwij+e1)*rrij*sss ggg(1)=xj*fac ggg(2)=yj*fac ggg(3)=zj*fac if (j.lt.i) then cd write (iout,*) 'ji' do k=1,3 ggg(k)=-ggg(k) C Uncomment following line for SC-p interactions c gradx_scp(k,j)=gradx_scp(k,j)-ggg(k) enddo endif do k=1,3 gvdwc_scp(k,i)=gvdwc_scp(k,i)-0.5D0*ggg(k) enddo kstart=min0(i+1,j) kend=max0(i-1,j-1) cd write (iout,*) 'i=',i,' j=',j,' kstart=',kstart,' kend=',kend cd write (iout,*) ggg(1),ggg(2),ggg(3) do k=kstart,kend do l=1,3 gvdwc_scp(l,k)=gvdwc_scp(l,k)-ggg(l) enddo enddo endif enddo enddo ! iint enddo ! i do i=1,nct do j=1,3 gvdwc_scp(j,i)=expon*gvdwc_scp(j,i) gradx_scp(j,i)=expon*gradx_scp(j,i) enddo enddo C****************************************************************************** C C N O T E !!! C C To save time the factor EXPON has been extracted from ALL components C of GVDWC and GRADX. Remember to multiply them by this factor before further C use! C C****************************************************************************** return end