Merge branch 'devel' into AFM
[unres.git] / source / wham / src-M / energy_p_new.F
index a4f5fb4..a7b0798 100644 (file)
@@ -44,11 +44,13 @@ C Gay-Berne potential (shifted LJ, angular dependence).
       goto 106
 C Gay-Berne-Vorobjev potential (shifted LJ, angular dependence).
   105 call egbv(evdw,evdw_t)
+C      write(iout,*) 'po elektostatyce'
 C
 C Calculate electrostatic (H-bonding) energy of the main chain.
 C
-  106 call eelec(ees,evdw1,eel_loc,eello_turn3,eello_turn4)
-C
+  106  call eelec(ees,evdw1,eel_loc,eello_turn3,eello_turn4)
+C            write(iout,*) 'po eelec'
+
 C Calculate excluded-volume interaction energy between peptide groups
 C and side chains.
 C
@@ -56,8 +58,9 @@ C
 c
 c Calculate the bond-stretching energy
 c
+
       call ebond(estr)
-c      write (iout,*) "estr",estr
+C       write (iout,*) "estr",estr
 C 
 C Calculate the disulfide-bridge and other energy and the contributions
 C from other distance constraints.
@@ -67,13 +70,14 @@ cd    print *,'EHPB exitted succesfully.'
 C
 C Calculate the virtual-bond-angle energy.
 C
-      call ebend(ebe)
+C      print *,'Bend energy finished.'
+      call ebend(ebe,ethetacnstr)
 cd    print *,'Bend energy finished.'
 C
 C Calculate the SC local energy.
 C
       call esc(escloc)
-cd    print *,'SCLOC energy finished.'
+C       print *,'SCLOC energy finished.'
 C
 C Calculate the virtual-bond torsional energy.
 C
@@ -107,20 +111,20 @@ c      write (iout,*) "ft(6)",fact(6)," evdw",evdw," evdw_t",evdw_t
       etot=wsc*(evdw+fact(6)*evdw_t)+wscp*evdw2+welec*fact(1)*ees
      & +wvdwpp*evdw1
      & +wang*ebe+wtor*fact(1)*etors+wscloc*escloc
-     & +wstrain*ehpb+nss*ebr+wcorr*fact(3)*ecorr+wcorr5*fact(4)*ecorr5
+     & +wstrain*ehpb+wcorr*fact(3)*ecorr+wcorr5*fact(4)*ecorr5
      & +wcorr6*fact(5)*ecorr6+wturn4*fact(3)*eello_turn4
      & +wturn3*fact(2)*eello_turn3+wturn6*fact(5)*eturn6
      & +wel_loc*fact(2)*eel_loc+edihcnstr+wtor_d*fact(2)*etors_d
-     & +wbond*estr+wsccor*fact(1)*esccor
+     & +wbond*estr+wsccor*fact(1)*esccor+ethetacnstr
 #else
       etot=wsc*(evdw+fact(6)*evdw_t)+wscp*evdw2
      & +welec*fact(1)*(ees+evdw1)
      & +wang*ebe+wtor*fact(1)*etors+wscloc*escloc
-     & +wstrain*ehpb+nss*ebr+wcorr*fact(3)*ecorr+wcorr5*fact(4)*ecorr5
+     & +wstrain*ehpb+wcorr*fact(3)*ecorr+wcorr5*fact(4)*ecorr5
      & +wcorr6*fact(5)*ecorr6+wturn4*fact(3)*eello_turn4
      & +wturn3*fact(2)*eello_turn3+wturn6*fact(5)*eturn6
      & +wel_loc*fact(2)*eel_loc+edihcnstr+wtor_d*fact(2)*etors_d
-     & +wbond*estr+wsccor*fact(1)*esccor
+     & +wbond*estr+wsccor*fact(1)*esccor+ethetacnstr
 #endif
       energia(0)=etot
       energia(1)=evdw
@@ -154,6 +158,7 @@ c      write (iout,*) "ft(6)",fact(6)," evdw",evdw," evdw_t",evdw_t
       energia(19)=esccor
       energia(20)=edihcnstr
       energia(21)=evdw_t
+      energia(24)=ethetacnstr
 c detecting NaNQ
 #ifdef ISNAN
 #ifdef AIX
@@ -228,8 +233,11 @@ C
      &   +wturn3*fact(2)*gel_loc_turn3(i)
      &   +wturn6*fact(5)*gel_loc_turn6(i)
      &   +wel_loc*fact(2)*gel_loc_loc(i)
+c     &   +wsccor*fact(1)*gsccor_loc(i)
+c BYLA ROZNICA Z CLUSTER< OSTATNIA LINIA DODANA
       enddo
       endif
+      if (dyn_ss) call dyn_set_nss
       return
       end
 C------------------------------------------------------------------------
@@ -267,6 +275,7 @@ C------------------------------------------------------------------------
       esccor=energia(19)
       edihcnstr=energia(20)
       estr=energia(18)
+      ethetacnstr=energia(24)
 #ifdef SPLITELE
       write (iout,10) evdw,wsc,evdw2,wscp,ees,welec*fact(1),evdw1,
      &  wvdwpp,
@@ -275,7 +284,7 @@ C------------------------------------------------------------------------
      &  ecorr,wcorr*fact(3),ecorr5,wcorr5*fact(4),ecorr6,wcorr6*fact(5),
      &  eel_loc,wel_loc*fact(2),eello_turn3,wturn3*fact(2),
      &  eello_turn4,wturn4*fact(3),eello_turn6,wturn6*fact(5),
-     &  esccor,wsccor*fact(1),edihcnstr,ebr*nss,etot
+     &  esccor,wsccor*fact(1),edihcnstr,ethetacnstr,ebr*nss,etot
    10 format (/'Virtual-chain energies:'//
      & 'EVDW=  ',1pE16.6,' WEIGHT=',1pD16.6,' (SC-SC)'/
      & 'EVDW2= ',1pE16.6,' WEIGHT=',1pD16.6,' (SC-p)'/
@@ -297,6 +306,7 @@ C------------------------------------------------------------------------
      & 'ETURN6=',1pE16.6,' WEIGHT=',1pD16.6,' (turns, 6th order)'/
      & 'ESCCOR=',1pE16.6,' WEIGHT=',1pD16.6,' (backbone-rotamer corr)'/
      & 'EDIHC= ',1pE16.6,' (dihedral angle constraints)'/
+     & 'ETHETC= ',1pE16.6,' (valence angle constraints)'/
      & 'ESS=   ',1pE16.6,' (disulfide-bridge intrinsic energy)'/ 
      & 'ETOT=  ',1pE16.6,' (total)')
 #else
@@ -306,7 +316,7 @@ C------------------------------------------------------------------------
      &  ecorr6,wcorr6*fact(5),eel_loc,wel_loc*fact(2),
      &  eello_turn3,wturn3*fact(2),eello_turn4,wturn4*fact(3),
      &  eello_turn6,wturn6*fact(5),esccor*fact(1),wsccor,
-     &  edihcnstr,ebr*nss,etot
+     &  edihcnstr,ethetacnstr,ebr*nss,etot
    10 format (/'Virtual-chain energies:'//
      & 'EVDW=  ',1pE16.6,' WEIGHT=',1pD16.6,' (SC-SC)'/
      & 'EVDW2= ',1pE16.6,' WEIGHT=',1pD16.6,' (SC-p)'/
@@ -327,6 +337,7 @@ C------------------------------------------------------------------------
      & 'ETURN6=',1pE16.6,' WEIGHT=',1pD16.6,' (turns, 6th order)'/
      & 'ESCCOR=',1pE16.6,' WEIGHT=',1pD16.6,' (backbone-rotamer corr)'/
      & 'EDIHC= ',1pE16.6,' (dihedral angle constraints)'/
+     & 'ETHETC= ',1pE16.6,' (valence angle constraints)'/
      & 'ESS=   ',1pE16.6,' (disulfide-bridge intrinsic energy)'/ 
      & 'ETOT=  ',1pE16.6,' (total)')
 #endif
@@ -359,11 +370,14 @@ C
       integer icant
       external icant
 cd    print *,'Entering ELJ nnt=',nnt,' nct=',nct,' expon=',expon
+c ROZNICA z cluster
       do i=1,210
         do j=1,2
           eneps_temp(j,i)=0.0d0
         enddo
       enddo
+cROZNICA
+
       evdw=0.0D0
       evdw_t=0.0d0
       do i=iatsc_s,iatsc_e
@@ -397,8 +411,11 @@ c           write (iout,*)'i=',i,' j=',j,' itypi=',itypi,' itypj=',itypj
             e2=fac*bb(itypi,itypj)
             evdwij=e1+e2
             ij=icant(itypi,itypj)
+c ROZNICA z cluster
             eneps_temp(1,ij)=eneps_temp(1,ij)+e1/dabs(eps0ij)
             eneps_temp(2,ij)=eneps_temp(2,ij)+e2/eps0ij
+c
+
 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),6(1pd12.4)/2(3(1pd12.4),5x)/)')
@@ -775,6 +792,7 @@ C
       include 'COMMON.ENEPS'
       include 'COMMON.IOUNITS'
       include 'COMMON.CALC'
+      include 'COMMON.SBRIDGE'
       logical lprn
       common /srutu/icall
       integer icant
@@ -814,6 +832,26 @@ C Calculate SC interaction energy.
 C
         do iint=1,nint_gr(i)
           do j=istart(i,iint),iend(i,iint)
+            IF (dyn_ss_mask(i).and.dyn_ss_mask(j)) THEN
+              call dyn_ssbond_ene(i,j,evdwij)
+              evdw=evdw+evdwij
+C            write (iout,'(a6,2i5,0pf7.3,a3,2f10.3)')
+C     &                        'evdw',i,j,evdwij,' ss',evdw,evdw_t
+C triple bond artifac removal
+             do k=j+1,iend(i,iint)
+C search over all next residues
+              if (dyn_ss_mask(k)) then
+C check if they are cysteins
+C              write(iout,*) 'k=',k
+              call triple_ssbond_ene(i,j,k,evdwij)
+C call the energy function that removes the artifical triple disulfide
+C bond the soubroutine is located in ssMD.F
+              evdw=evdw+evdwij
+C             write (iout,'(a6,2i5,0pf7.3,a3,2f10.3)')
+C     &                        'evdw',i,j,evdwij,'tss',evdw,evdw_t
+              endif!dyn_ss_mask(k)
+             enddo! k
+            ELSE
             ind=ind+1
             itypj=iabs(itype(j))
             if (itypj.eq.ntyp1) cycle
@@ -952,6 +990,8 @@ C Calculate the radial part of the gradient
 C Calculate angular part of the gradient.
             call sc_grad
             endif
+C            write(iout,*)  "partial sum", evdw, evdw_t
+            ENDIF    ! dyn_ss            
           enddo      ! j
         enddo        ! iint
       enddo          ! i
@@ -1898,17 +1938,22 @@ cd      enddo
       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
+C      print '(a)','Enter EELEC'
+C      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
+          if (i.eq.1) then 
+           if (itype(i).eq.ntyp1.or. itype(i+1).eq.ntyp1
+     &  .or. itype(i+2).eq.ntyp1) cycle
+          else
         if (itype(i).eq.ntyp1 .or. itype(i+1).eq.ntyp1
      &  .or. itype(i+2).eq.ntyp1
      &  .or. itype(i-1).eq.ntyp1
      &) cycle
+         endif
         if (itel(i).eq.0) goto 1215
         dxi=dc(1,i)
         dyi=dc(2,i)
@@ -1926,12 +1971,18 @@ cd      write (iout,*) 'iatel_s=',iatel_s,' iatel_e=',iatel_e
           zmedi=mod(zmedi,boxzsize)
           if (zmedi.lt.0) zmedi=zmedi+boxzsize
         num_conti=0
-c        write (iout,*) 'i',i,' ielstart',ielstart(i),' ielend',ielend(i)
+C        write (iout,*) 'i',i,' ielstart',ielstart(i),' ielend',ielend(i)
         do j=ielstart(i),ielend(i)
+          if (j.eq.1) then
+           if (itype(j).eq.ntyp1 .or. itype(j+1).eq.ntyp1
+     & .or.itype(j+2).eq.ntyp1
+     &) cycle  
+          else     
           if (itype(j).eq.ntyp1 .or. itype(j+1).eq.ntyp1
      & .or.itype(j+2).eq.ntyp1
      & .or.itype(j-1).eq.ntyp1
      &) cycle
+         endif
 C
 C) cycle
           if (itel(j).eq.0) goto 1216
@@ -1964,7 +2015,7 @@ C End diagnostics
           if (yj.lt.0) yj=yj+boxysize
           zj=mod(zj,boxzsize)
           if (zj.lt.0) zj=zj+boxzsize
-      dist_init=(xj-xi)**2+(yj-yi)**2+(zj-zi)**2
+      dist_init=(xj-xmedi)**2+(yj-ymedi)**2+(zj-zmedi)**2
       xj_safe=xj
       yj_safe=yj
       zj_safe=zj
@@ -1975,7 +2026,7 @@ C End diagnostics
           xj=xj_safe+xshift*boxxsize
           yj=yj_safe+yshift*boxysize
           zj=zj_safe+zshift*boxzsize
-          dist_temp=(xj-xi)**2+(yj-yi)**2+(zj-zi)**2
+          dist_temp=(xj-xmedi)**2+(yj-ymedi)**2+(zj-zmedi)**2
           if(dist_temp.lt.dist_init) then
             dist_init=dist_temp
             xj_temp=xj
@@ -1995,7 +2046,6 @@ C End diagnostics
           yj=yj_safe-ymedi
           zj=zj_safe-zmedi
        endif
-
           rij=xj*xj+yj*yj+zj*zj
             sss=sscale(sqrt(rij))
             sssgrad=sscagrad(sqrt(rij))
@@ -2027,7 +2077,7 @@ c             write (iout,'(a6,2i5,0pf7.3,2i5,2e11.3)')
 c     &'evdw1',i,j,evdwij
 c     &,iteli,itelj,aaa,evdw1
 
-c              write (iout,'(a6,2i5,0pf7.3)') 'ees',i,j,eesij
+C              write (iout,'(a6,2i5,0pf7.3)') 'ees',i,j,eesij
 c          write(iout,'(2(2i3,2x),7(1pd12.4)/2(3(1pd12.4),5x)/)')
 c     &      iteli,i,itelj,j,aaa,bbb,ael6i,ael3i,
 c     &      1.0D0/dsqrt(rrmij),evdwij,eesij,
       include 'COMMON.DERIV'
       include 'COMMON.VAR'
       include 'COMMON.INTERACT'
+      include 'COMMON.CONTROL'
+      include 'COMMON.IOUNITS'
       dimension ggg(3)
       ehpb=0.0D0
 cd    print *,'edis: nhpb=',nhpb,' fbr=',fbr
 cd    print *,'link_start=',link_start,' link_end=',link_end
+C      write(iout,*) link_end, "link_end"
       if (link_end.eq.0) return
       do i=link_start,link_end
 C If ihpb(i) and jhpb(i) > NRES, this is a SC-SC distance, otherwise a
@@ -3102,25 +3155,98 @@ C iii and jjj point to the residues for which the distance is assigned.
         endif
 C 24/11/03 AL: SS bridges handled separately because of introducing a specific
 C    distance and angle dependent SS bond potential.
-        if (ii.gt.nres .and. iabs(itype(iii)).eq.1 .and. 
+C        if (ii.gt.nres .and. iabs(itype(iii)).eq.1 .and. 
+C     & iabs(itype(jjj)).eq.1) then
+C       write(iout,*) constr_dist,"const"
+       if (.not.dyn_ss .and. i.le.nss) then
+         if (ii.gt.nres .and. iabs(itype(iii)).eq.1 .and.
      & iabs(itype(jjj)).eq.1) then
           call ssbond_ene(iii,jjj,eij)
           ehpb=ehpb+2*eij
-        else
-C Calculate the distance between the two points and its difference from the
-C target distance.
-        dd=dist(ii,jj)
-        rdis=dd-dhpb(i)
+           endif !ii.gt.neres
+        else if (ii.gt.nres .and. jj.gt.nres) then
+c Restraints from contact prediction
+          dd=dist(ii,jj)
+          if (constr_dist.eq.11) then
+C            ehpb=ehpb+fordepth(i)**4.0d0
+C     &          *rlornmr1(dd,dhpb(i),dhpb1(i),forcon(i))
+            ehpb=ehpb+fordepth(i)**4.0d0
+     &          *rlornmr1(dd,dhpb(i),dhpb1(i),forcon(i))
+            fac=fordepth(i)**4.0d0
+     &          *rlornmr1prim(dd,dhpb(i),dhpb1(i),forcon(i))/dd
+C          write (iout,'(a6,2i5,3f8.3)') "edisl",ii,jj,
+C     &    ehpb,fordepth(i),dd
+C            write(iout,*) ehpb,"atu?"
+C            ehpb,"tu?"
+C            fac=fordepth(i)**4.0d0
+C     &          *rlornmr1prim(dd,dhpb(i),dhpb1(i),forcon(i))/dd
+           else
+          if (dhpb1(i).gt.0.0d0) then
+            ehpb=ehpb+2*forcon(i)*gnmr1(dd,dhpb(i),dhpb1(i))
+            fac=forcon(i)*gnmr1prim(dd,dhpb(i),dhpb1(i))/dd
+c            write (iout,*) "beta nmr",
+c     &        dd,2*forcon(i)*gnmr1(dd,dhpb(i),dhpb1(i))
+          else
+            dd=dist(ii,jj)
+            rdis=dd-dhpb(i)
+C Get the force constant corresponding to this distance.
+            waga=forcon(i)
+C Calculate the contribution to energy.
+            ehpb=ehpb+waga*rdis*rdis
+c            write (iout,*) "beta reg",dd,waga*rdis*rdis
+C
+C Evaluate gradient.
+C
+            fac=waga*rdis/dd
+          endif !end dhpb1(i).gt.0
+          endif !end const_dist=11
+          do j=1,3
+            ggg(j)=fac*(c(j,jj)-c(j,ii))
+          enddo
+          do j=1,3
+            ghpbx(j,iii)=ghpbx(j,iii)-ggg(j)
+            ghpbx(j,jjj)=ghpbx(j,jjj)+ggg(j)
+          enddo
+          do k=1,3
+            ghpbc(k,jjj)=ghpbc(k,jjj)+ggg(k)
+            ghpbc(k,iii)=ghpbc(k,iii)-ggg(k)
+          enddo
+        else !ii.gt.nres
+C          write(iout,*) "before"
+          dd=dist(ii,jj)
+C          write(iout,*) "after",dd
+          if (constr_dist.eq.11) then
+            ehpb=ehpb+fordepth(i)**4.0d0
+     &          *rlornmr1(dd,dhpb(i),dhpb1(i),forcon(i))
+            fac=fordepth(i)**4.0d0
+     &          *rlornmr1prim(dd,dhpb(i),dhpb1(i),forcon(i))/dd
+C            ehpb=ehpb+fordepth(i)**4*rlornmr1(dd,dhpb(i),dhpb1(i))
+C            fac=fordepth(i)**4*rlornmr1prim(dd,dhpb(i),dhpb1(i))/dd
+C            print *,ehpb,"tu?"
+C            write(iout,*) ehpb,"btu?",
+C     & dd,dhpb(i),dhpb1(i),fordepth(i),forcon(i)
+C          write (iout,'(a6,2i5,3f8.3)') "edisl",ii,jj,
+C     &    ehpb,fordepth(i),dd
+           else   
+          if (dhpb1(i).gt.0.0d0) then
+            ehpb=ehpb+2*forcon(i)*gnmr1(dd,dhpb(i),dhpb1(i))
+            fac=forcon(i)*gnmr1prim(dd,dhpb(i),dhpb1(i))/dd
+c            write (iout,*) "alph nmr",
+c     &        dd,2*forcon(i)*gnmr1(dd,dhpb(i),dhpb1(i))
+          else
+            rdis=dd-dhpb(i)
 C Get the force constant corresponding to this distance.
-        waga=forcon(i)
+            waga=forcon(i)
 C Calculate the contribution to energy.
-        ehpb=ehpb+waga*rdis*rdis
+            ehpb=ehpb+waga*rdis*rdis
+c            write (iout,*) "alpha reg",dd,waga*rdis*rdis
 C
 C Evaluate gradient.
 C
-        fac=waga*rdis/dd
-cd      print *,'i=',i,' ii=',ii,' jj=',jj,' dhpb=',dhpb(i),' dd=',dd,
-cd   &   ' waga=',waga,' fac=',fac
+            fac=waga*rdis/dd
+          endif
+          endif
+
         do j=1,3
           ggg(j)=fac*(c(j,jj)-c(j,ii))
         enddo
@@ -3140,7 +3266,7 @@ C Cartesian gradient in the SC vectors (ghpbx).
         enddo
         endif
       enddo
-      ehpb=0.5D0*ehpb
+      if (constr_dist.ne.11) ehpb=0.5D0*ehpb
       return
       end
 C--------------------------------------------------------------------------
@@ -3267,12 +3393,14 @@ C        else
          else
           diff = vbld(i)-vbldp0
 c          write (iout,*) i,vbld(i),vbldp0,diff,AKP*diff*diff
+         endif
           estr=estr+diff*diff
           do j=1,3
             gradb(j,i-1)=AKP*diff*dc(j,i-1)/vbld(i)
           enddo
-        endif
-
+C        endif
+C        write (iout,'(a7,i5,4f7.3)')
+C     &     "estr bb",i,vbld(i),vbldp0,diff,AKP*diff*diff
       enddo
       estr=0.5d0*AKP*estr+estr1
 c
@@ -3284,8 +3412,8 @@ c
           nbi=nbondterm(iti)
           if (nbi.eq.1) then
             diff=vbld(i+nres)-vbldsc0(1,iti)
-c            write (iout,*) i,iti,vbld(i+nres),vbldsc0(1,iti),diff,
-c     &      AKSC(1,iti),AKSC(1,iti)*diff*diff
+C            write (iout,*) i,iti,vbld(i+nres),vbldsc0(1,iti),diff,
+C     &      AKSC(1,iti),AKSC(1,iti)*diff*diff
             estr=estr+0.5d0*AKSC(1,iti)*diff*diff
             do j=1,3
               gradbx(j,i)=AKSC(1,iti)*diff*dc(j,i+nres)/vbld(i+nres)
@@ -3327,7 +3455,7 @@ c     &      AKSC(j,iti),abond0(j,iti),u(j),j=1,nbi)
       end
 #ifdef CRYST_THETA
 C--------------------------------------------------------------------------
-      subroutine ebend(etheta)
+      subroutine ebend(etheta,ethetacnstr)
 C
 C Evaluate the virtual-bond-angle energy given the virtual-bond dihedral
 C angles gamma and its derivatives in consecutive thetas and gammas.
       include 'COMMON.IOUNITS'
       include 'COMMON.NAMES'
       include 'COMMON.FFIELD'
+      include 'COMMON.TORCNSTR'
       common /calcthet/ term1,term2,termm,diffak,ratak,
      & ak,aktc,termpre,termexp,sigc,sig0i,time11,time12,sigcsq,
      & delthe0,sig0inv,sigtc,sigsqtc,delthec,it
       double precision y(2),z(2)
       delta=0.02d0*pi
-      time11=dexp(-2*time)
-      time12=1.0d0
+c      time11=dexp(-2*time)
+c      time12=1.0d0
       etheta=0.0D0
 c      write (iout,*) "nres",nres
 c     write (*,'(a,i2)') 'EBEND ICG=',icg
 c      write (iout,*) ithet_start,ithet_end
       do i=ithet_start,ithet_end
 C        if (itype(i-1).eq.ntyp1) cycle
+        if (i.le.2) cycle
         if ((itype(i-1).eq.ntyp1).or.itype(i-2).eq.ntyp1
      &  .or.itype(i).eq.ntyp1) cycle
 C Zero the energy function and its derivative at 0 or pi.
@@ -3374,12 +3504,16 @@ C Zero the energy function and its derivative at 0 or pi.
           ichir21=isign(1,itype(i))
           ichir22=isign(1,itype(i))
          endif
+         if (i.eq.3) then
+          y(1)=0.0D0
+          y(2)=0.0D0
+          else
 
         if (i.gt.3 .and. itype(i-3).ne.ntyp1) then
 #ifdef OSF
           phii=phi(i)
-          icrc=0
-          call proc_proc(phii,icrc)
+c          icrc=0
+c          call proc_proc(phii,icrc)
           if (icrc.eq.1) phii=150.0
 #else
           phii=phi(i)
@@ -3390,11 +3524,12 @@ C Zero the energy function and its derivative at 0 or pi.
           y(1)=0.0D0
           y(2)=0.0D0
         endif
+        endif
         if (i.lt.nres .and. itype(i+1).ne.ntyp1) then
 #ifdef OSF
           phii1=phi(i+1)
-          icrc=0
-          call proc_proc(phii1,icrc)
+c          icrc=0
+c          call proc_proc(phii1,icrc)
           if (icrc.eq.1) phii1=150.0
           phii1=pinorm(phii1)
           z(1)=cos(phii1)
@@ -3457,12 +3592,41 @@ C Derivatives of the "mean" values in gamma1 and gamma2.
      &        E_theta,E_tc)
         endif
         etheta=etheta+ethetai
+c         write (iout,'(a6,i5,0pf7.3,f7.3,i5)')
+c     &      'ebend',i,ethetai,theta(i),itype(i)
 c        write (iout,'(2i3,3f8.3,f10.5)') i,it,rad2deg*theta(i),
 c     &    rad2deg*phii,rad2deg*phii1,ethetai
         if (i.gt.3) gloc(i-3,icg)=gloc(i-3,icg)+wang*E_tc*dthetg1
         if (i.lt.nres) gloc(i-2,icg)=gloc(i-2,icg)+wang*E_tc*dthetg2
         gloc(nphi+i-2,icg)=wang*(E_theta+E_tc*dthett)
- 1215   continue
+c 1215   continue
+      enddo
+      ethetacnstr=0.0d0
+C      print *,ithetaconstr_start,ithetaconstr_end,"TU"
+      do i=1,ntheta_constr
+        itheta=itheta_constr(i)
+        thetiii=theta(itheta)
+        difi=pinorm(thetiii-theta_constr0(i))
+        if (difi.gt.theta_drange(i)) then
+          difi=difi-theta_drange(i)
+          ethetacnstr=ethetacnstr+0.25d0*for_thet_constr(i)*difi**4
+          gloc(itheta+nphi-2,icg)=gloc(itheta+nphi-2,icg)
+     &    +for_thet_constr(i)*difi**3
+        else if (difi.lt.-drange(i)) then
+          difi=difi+drange(i)
+          ethetacnstr=ethetacnstr+0.25d0*for_thet_constr(i)*difi**4
+          gloc(itheta+nphi-2,icg)=gloc(itheta+nphi-2,icg)
+     &    +for_thet_constr(i)*difi**3
+        else
+          difi=0.0
+        endif
+C       if (energy_dec) then
+C        write (iout,'(a6,2i5,4f8.3,2e14.5)') "ethetc",
+C     &    i,itheta,rad2deg*thetiii,
+C     &    rad2deg*theta_constr0(i),  rad2deg*theta_drange(i),
+C     &    rad2deg*difi,0.25d0*for_thet_constr(i)*difi**4,
+C     &    gloc(itheta+nphi-2,icg)
+        endif
       enddo
 C Ufff.... We've done all this!!! 
       return
@@ -3577,7 +3741,7 @@ C "Thank you" to MAPLE (probably spared one day of hand-differentiation).
       end
 #else
 C--------------------------------------------------------------------------
-      subroutine ebend(etheta)
+      subroutine ebend(etheta,ethetacnstr)
 C
 C Evaluate the virtual-bond-angle energy given the virtual-bond dihedral
 C angles gamma and its derivatives in consecutive thetas and gammas.
@@ -3597,6 +3761,7 @@ C
       include 'COMMON.NAMES'
       include 'COMMON.FFIELD'
       include 'COMMON.CONTROL'
+      include 'COMMON.TORCNSTR'
       double precision coskt(mmaxtheterm),sinkt(mmaxtheterm),
      & cosph1(maxsingle),sinph1(maxsingle),cosph2(maxsingle),
      & sinph2(maxsingle),cosph1ph2(maxdouble,maxdouble),
@@ -3605,7 +3770,9 @@ C
       etheta=0.0D0
 c      write (iout,*) "ithetyp",(ithetyp(i),i=1,ntyp1)
       do i=ithet_start,ithet_end
+C         if (i.eq.2) cycle
 C        if (itype(i-1).eq.ntyp1) cycle
+        if (i.le.2) cycle
         if ((itype(i-1).eq.ntyp1).or.itype(i-2).eq.ntyp1
      &  .or.itype(i).eq.ntyp1) cycle
         if (iabs(itype(i+1)).eq.20) iblock=2
@@ -3619,6 +3786,14 @@ C        if (itype(i-1).eq.ntyp1) cycle
           coskt(k)=dcos(k*theti2)
           sinkt(k)=dsin(k*theti2)
         enddo
+        if (i.eq.3) then 
+          phii=0.0d0
+          ityp1=nthetyp+1
+          do k=1,nsingle
+            cosph1(k)=0.0d0
+            sinph1(k)=0.0d0
+          enddo
+        else
         if (i.gt.3 .and. itype(i-3).ne.ntyp1) then
 #ifdef OSF
           phii=phi(i)
@@ -3633,12 +3808,14 @@ C        if (itype(i-1).eq.ntyp1) cycle
           enddo
         else
           phii=0.0d0
-          ityp1=nthetyp+1
+c          ityp1=nthetyp+1
           do k=1,nsingle
+            ityp1=ithetyp((itype(i-2)))
             cosph1(k)=0.0d0
             sinph1(k)=0.0d0
           enddo 
         endif
+        endif
         if (i.lt.nres .and. itype(i+1).ne.ntyp1) then
 #ifdef OSF
           phii1=phi(i+1)
@@ -3654,7 +3831,8 @@ C        if (itype(i-1).eq.ntyp1) cycle
           enddo
         else
           phii1=0.0d0
-          ityp3=nthetyp+1
+c          ityp3=nthetyp+1
+          ityp3=ithetyp((itype(i)))
           do k=1,nsingle
             cosph2(k)=0.0d0
             sinph2(k)=0.0d0
@@ -3771,7 +3949,36 @@ c        call flush(iout)
         etheta=etheta+ethetai
         if (i.gt.3) gloc(i-3,icg)=gloc(i-3,icg)+wang*dephii
         if (i.lt.nres) gloc(i-2,icg)=gloc(i-2,icg)+wang*dephii1
-        gloc(nphi+i-2,icg)=wang*dethetai
+c        gloc(nphi+i-2,icg)=wang*dethetai
+        gloc(nphi+i-2,icg)=gloc(nphi+i-2,icg)+wang*dethetai
+      enddo
+C now constrains
+      ethetacnstr=0.0d0
+C      print *,ithetaconstr_start,ithetaconstr_end,"TU"
+      do i=1,ntheta_constr
+        itheta=itheta_constr(i)
+        thetiii=theta(itheta)
+        difi=pinorm(thetiii-theta_constr0(i))
+        if (difi.gt.theta_drange(i)) then
+          difi=difi-theta_drange(i)
+          ethetacnstr=ethetacnstr+0.25d0*for_thet_constr(i)*difi**4
+          gloc(itheta+nphi-2,icg)=gloc(itheta+nphi-2,icg)
+     &    +for_thet_constr(i)*difi**3
+        else if (difi.lt.-drange(i)) then
+          difi=difi+drange(i)
+          ethetacnstr=ethetacnstr+0.25d0*for_thet_constr(i)*difi**4
+          gloc(itheta+nphi-2,icg)=gloc(itheta+nphi-2,icg)
+     &    +for_thet_constr(i)*difi**3
+        else
+          difi=0.0
+        endif
+C       if (energy_dec) then
+C        write (iout,'(a6,2i5,4f8.3,2e14.5)') "ethetc",
+C     &    i,itheta,rad2deg*thetiii,
+C     &    rad2deg*theta_constr0(i),  rad2deg*theta_drange(i),
+C     &    rad2deg*difi,0.25d0*for_thet_constr(i)*difi**4,
+C     &    gloc(itheta+nphi-2,icg)
+C        endif
       enddo
       return
       end
@@ -3799,14 +4006,14 @@ C ALPHA and OMEGA.
       common /sccalc/ time11,time12,time112,theti,it,nlobit
       delta=0.02d0*pi
       escloc=0.0D0
-c     write (iout,'(a)') 'ESC'
+C      write (iout,*) 'ESC'
       do i=loc_start,loc_end
         it=itype(i)
         if (it.eq.ntyp1) cycle
         if (it.eq.10) goto 1
         nlobit=nlob(iabs(it))
 c       print *,'i=',i,' it=',it,' nlobit=',nlobit
-c       write (iout,*) 'i=',i,' ssa=',ssa,' ssad=',ssad
+C        write (iout,*) 'i=',i,' ssa=',ssa,' ssad=',ssad
         theti=theta(i+1)-pipol
         x(1)=dtan(theti)
         x(2)=alph(i)
@@ -3842,8 +4049,8 @@ c        write (iout,*) "i",i," x",x(1),x(2),x(3)
             dersc(k)=ss*dersc(k)+(1.0d0-ss)*dersc0(k)
           enddo
           dersc(2)=dersc(2)+ssd*(escloci-esclocbi)
-c         write (iout,*) 'i=',i,x(2)*rad2deg,escloci0,escloci,
-c    &             esclocbi,ss,ssd
+          write (iout,*) 'i=',i,x(2)*rad2deg,escloci0,escloci,
+     &             esclocbi,ss,ssd
           escloci=ss*escloci+(1.0d0-ss)*esclocbi
 c         escloci=esclocbi
 c         write (iout,*) escloci
@@ -3877,15 +4084,17 @@ c         write (iout,*) escloci
           enddo
           dersc(2)=dersc(2)+ssd*(escloci-esclocbi)
 c         write (iout,*) 'i=',i,x(2)*rad2deg,escloci0,escloci,
-c    &             esclocbi,ss,ssd
+c     &             esclocbi,ss,ssd
           escloci=ss*escloci+(1.0d0-ss)*esclocbi
-c         write (iout,*) escloci
+C         write (iout,*) 'i=',i, escloci
         else
           call enesc(x,escloci,dersc,ddummy,.false.)
         endif
 
         escloc=escloc+escloci
-c        write (iout,*) 'i=',i,' escloci=',escloci,' dersc=',dersc
+C        write (iout,*) 'i=',i,' escloci=',escloci,' dersc=',dersc
+            write (iout,'(a6,i5,0pf7.3)')
+     &     'escloc',i,escloci
 
         gloc(nphi+i-1,icg)=gloc(nphi+i-1,icg)+
      &   wscloc*dersc(1)
@@ -4539,15 +4748,16 @@ c       write (iout,*) 'i=',i,' gloc=',gloc(i-3,icg)
         difi=phii-phi0(i)
         if (difi.gt.drange(i)) then
           difi=difi-drange(i)
-          edihcnstr=edihcnstr+0.25d0*ftors*difi**4
-          gloc(itori-3,icg)=gloc(itori-3,icg)+ftors*difi**3
+          edihcnstr=edihcnstr+0.25d0*ftors(i)*difi**4
+          gloc(itori-3,icg)=gloc(itori-3,icg)+ftors(i)*difi**3
         else if (difi.lt.-drange(i)) then
           difi=difi+drange(i)
-          edihcnstr=edihcnstr+0.25d0*ftors*difi**4
-          gloc(itori-3,icg)=gloc(itori-3,icg)+ftors*difi**3
+          edihcnstr=edihcnstr+0.25d0*ftors(i)*difi**4
+          gloc(itori-3,icg)=gloc(itori-3,icg)+ftors(i)*difi**3
         endif
-!        write (iout,'(2i5,2f8.3,2e14.5)') i,itori,rad2deg*phii,
-!     &    rad2deg*difi,0.25d0*ftors*difi**4,gloc(itori-3,icg)
+C        write (iout,'(a6,2i5,2f8.3,2e14.5)') "edih",
+C     &    i,itori,rad2deg*phii,
+C     &    rad2deg*difi,0.25d0*ftors(i)*difi**4,gloc(itori-3,icg)
       enddo
 !      write (iout,*) 'edihcnstr',edihcnstr
       return
@@ -4575,6 +4785,7 @@ C Set lprn=.true. for debugging
 c      lprn=.true.
       etors=0.0D0
       do i=iphi_start,iphi_end
+        if (i.le.2) cycle
         if (itype(i-2).eq.ntyp1.or. itype(i-1).eq.ntyp1
      &      .or. itype(i).eq.ntyp1 .or. itype(i-3).eq.ntyp1) cycle
 C        if (itype(i-2).eq.ntyp1 .or. itype(i-1).eq.ntyp1
@@ -4636,21 +4847,24 @@ c       write (iout,*) 'i=',i,' gloc=',gloc(i-3,icg)
         edihi=0.0d0
         if (difi.gt.drange(i)) then
           difi=difi-drange(i)
-          edihcnstr=edihcnstr+0.25d0*ftors*difi**4
-          gloc(itori-3,icg)=gloc(itori-3,icg)+ftors*difi**3
-          edihi=0.25d0*ftors*difi**4
+          edihcnstr=edihcnstr+0.25d0*ftors(i)*difi**4
+          gloc(itori-3,icg)=gloc(itori-3,icg)+ftors(i)*difi**3
+          edihi=0.25d0*ftors(i)*difi**4
         else if (difi.lt.-drange(i)) then
           difi=difi+drange(i)
-          edihcnstr=edihcnstr+0.25d0*ftors*difi**4
-          gloc(itori-3,icg)=gloc(itori-3,icg)+ftors*difi**3
-          edihi=0.25d0*ftors*difi**4
+          edihcnstr=edihcnstr+0.25d0*ftors(i)*difi**4
+          gloc(itori-3,icg)=gloc(itori-3,icg)+ftors(i)*difi**3
+          edihi=0.25d0*ftors(i)*difi**4
         else
           difi=0.0d0
         endif
+        write (iout,'(a6,2i5,2f8.3,2e14.5)') "edih",
+     &    i,itori,rad2deg*phii,
+     &    rad2deg*difi,0.25d0*ftors(i)*difi**4
 c        write (iout,'(2i5,4f10.5,e15.5)') i,itori,phii,phi0(i),difi,
 c     &    drange(i),edihi
 !        write (iout,'(2i5,2f8.3,2e14.5)') i,itori,rad2deg*phii,
-!     &    rad2deg*difi,0.25d0*ftors*difi**4,gloc(itori-3,icg)
+!     &    rad2deg*difi,0.25d0*ftors(i)*difi**4,gloc(itori-3,icg)
       enddo
 !      write (iout,*) 'edihcnstr',edihcnstr
       return
@@ -4678,6 +4892,7 @@ C Set lprn=.true. for debugging
 c     lprn=.true.
       etors_d=0.0D0
       do i=iphi_start,iphi_end-1
+        if (i.le.3) cycle
 C        if (itype(i-2).eq.ntyp1.or. itype(i-1).eq.ntyp1
 C     &      .or. itype(i).eq.ntyp1 .or. itype(i+1).eq.ntyp1) cycle
          if ((itype(i-2).eq.ntyp1).or.itype(i-3).eq.ntyp1.or.
@@ -4796,6 +5011,7 @@ c   3 = SC...Ca...Ca...SCi
            esccor=esccor+v1ij*cosphi+v2ij*sinphi
            gloci=gloci+j*(v2ij*cosphi-v1ij*sinphi)
          enddo
+C      write (iout,*)"EBACK_SC_COR",esccor,i
 c      write (iout,*) "EBACK_SC_COR",i,v1ij*cosphi+v2ij*sinphi,intertyp,
 c     & nterm_sccor(isccori,isccori1),isccori,isccori1
 c        gloc_sc(intertyp,i-3,icg)=gloc_sc(intertyp,i-3,icg)+wsccor*gloci