poprawka w triss
[unres.git] / source / unres / src_MD / energy_p_new_barrier.F
index e3f2c36..7cf6721 100644 (file)
@@ -131,6 +131,11 @@ C
 C Calculate electrostatic (H-bonding) energy of the main chain.
 C
   107 continue
+cmc
+cmc Sep-06: egb takes care of dynamic ss bonds too
+cmc
+c      if (dyn_ss) call dyn_set_nss
+
 c      print *,"Processor",myrank," computed USCSC"
 #ifdef TIMING
 #ifdef MPI
@@ -326,6 +331,7 @@ C
       energia(23)=evdw_m
 c      print *," Processor",myrank," calls SUM_ENERGY"
       call sum_energy(energia,.true.)
+      if (dyn_ss) call dyn_set_nss
 c      print *," Processor",myrank," left SUM_ENERGY"
 #ifdef TIMING
 #ifdef MPI
@@ -423,14 +429,14 @@ cMS$ATTRIBUTES C ::  proc_proc
 #ifdef SPLITELE
       etot=wsc*evdw+wscp*evdw2+welec*ees+wvdwpp*evdw1
      & +wang*ebe+wtor*etors+wscloc*escloc
-     & +wstrain*ehpb+nss*ebr+wcorr*ecorr+wcorr5*ecorr5
+     & +wstrain*ehpb+wcorr*ecorr+wcorr5*ecorr5
      & +wcorr6*ecorr6+wturn4*eello_turn4+wturn3*eello_turn3
      & +wturn6*eturn6+wel_loc*eel_loc+edihcnstr+wtor_d*etors_d
      & +wbond*estr+Uconst+wsccor*esccor
 #else
       etot=wsc*evdw+wscp*evdw2+welec*(ees+evdw1)
      & +wang*ebe+wtor*etors+wscloc*escloc
-     & +wstrain*ehpb+nss*ebr+wcorr*ecorr+wcorr5*ecorr5
+     & +wstrain*ehpb+wcorr*ecorr+wcorr5*ecorr5
      & +wcorr6*ecorr6+wturn4*eello_turn4+wturn3*eello_turn3
      & +wturn6*eturn6+wel_loc*eel_loc+edihcnstr+wtor_d*etors_d
      & +wbond*estr+Uconst+wsccor*esccor
@@ -471,7 +477,7 @@ cMS$ATTRIBUTES C ::  proc_proc
       include 'mpif.h'
 #endif
       double precision gradbufc(3,maxres),gradbufx(3,maxres),
-     &  glocbuf(4*maxres),gradbufc_sum(3,maxres)
+     &  glocbuf(4*maxres),gradbufc_sum(3,maxres),gloc_scbuf(3,maxres)
       include 'COMMON.SETUP'
       include 'COMMON.IOUNITS'
       include 'COMMON.FFIELD'
@@ -483,6 +489,7 @@ cMS$ATTRIBUTES C ::  proc_proc
       include 'COMMON.CONTROL'
       include 'COMMON.TIME1'
       include 'COMMON.MAXGRAD'
+      include 'COMMON.SCCOR'
 #ifdef TIMING
 #ifdef MPI
       time01=MPI_Wtime()
@@ -755,7 +762,6 @@ c      enddo
      &   +wturn3*gel_loc_turn3(i)
      &   +wturn6*gel_loc_turn6(i)
      &   +wel_loc*gel_loc_loc(i)
-     &   +wsccor*gsccor_loc(i)
       enddo
 #ifdef DEBUG
       write (iout,*) "gloc after adding corr"
@@ -774,6 +780,19 @@ c      enddo
         do i=1,4*nres
           glocbuf(i)=gloc(i,icg)
         enddo
+#ifdef DEBUG
+      write (iout,*) "gloc_sc before reduce"
+      do i=1,nres
+       do j=1,3
+        write (iout,*) i,j,gloc_sc(j,i,icg)
+       enddo
+      enddo
+#endif
+        do i=1,nres
+         do j=1,3
+          gloc_scbuf(j,i)=gloc_sc(j,i,icg)
+         enddo
+        enddo
         time00=MPI_Wtime()
         call MPI_Barrier(FG_COMM,IERR)
         time_barrier_g=time_barrier_g+MPI_Wtime()-time00
@@ -784,8 +803,18 @@ c      enddo
      &    MPI_DOUBLE_PRECISION,MPI_SUM,king,FG_COMM,IERR)
         call MPI_Reduce(glocbuf(1),gloc(1,icg),4*nres,
      &    MPI_DOUBLE_PRECISION,MPI_SUM,king,FG_COMM,IERR)
+        call MPI_Reduce(gloc_scbuf(1,1),gloc_sc(1,1,icg),3*nres,
+     &    MPI_DOUBLE_PRECISION,MPI_SUM,king,FG_COMM,IERR)
         time_reduce=time_reduce+MPI_Wtime()-time00
 #ifdef DEBUG
+      write (iout,*) "gloc_sc after reduce"
+      do i=1,nres
+       do j=1,3
+        write (iout,*) i,j,gloc_sc(j,i,icg)
+       enddo
+      enddo
+#endif
+#ifdef DEBUG
       write (iout,*) "gloc after reduce"
       do i=1,4*nres
         write (iout,*) i,gloc(i,icg)
@@ -1029,25 +1058,25 @@ C------------------------------------------------------------------------
      &  edihcnstr,ebr*nss,
      &  Uconst,etot
    10 format (/'Virtual-chain energies:'//
-     & 'EVDW=  ',1pE16.6,' WEIGHT=',1pD16.6,' (SC-SC)'/
-     & 'EVDW2= ',1pE16.6,' WEIGHT=',1pD16.6,' (SC-p)'/
-     & 'EES=   ',1pE16.6,' WEIGHT=',1pD16.6,' (p-p)'/
-     & 'EVDWPP=',1pE16.6,' WEIGHT=',1pD16.6,' (p-p VDW)'/
-     & 'ESTR=  ',1pE16.6,' WEIGHT=',1pD16.6,' (stretching)'/
-     & 'EBE=   ',1pE16.6,' WEIGHT=',1pD16.6,' (bending)'/
-     & 'ESC=   ',1pE16.6,' WEIGHT=',1pD16.6,' (SC local)'/
-     & 'ETORS= ',1pE16.6,' WEIGHT=',1pD16.6,' (torsional)'/
-     & 'ETORSD=',1pE16.6,' WEIGHT=',1pD16.6,' (double torsional)'/
-     & 'EHBP=  ',1pE16.6,' WEIGHT=',1pD16.6,
+     & 'EVDW=  ',1pE16.6,' WEIGHT=',1pE16.6,' (SC-SC)'/
+     & 'EVDW2= ',1pE16.6,' WEIGHT=',1pE16.6,' (SC-p)'/
+     & 'EES=   ',1pE16.6,' WEIGHT=',1pE16.6,' (p-p)'/
+     & 'EVDWPP=',1pE16.6,' WEIGHT=',1pE16.6,' (p-p VDW)'/
+     & 'ESTR=  ',1pE16.6,' WEIGHT=',1pE16.6,' (stretching)'/
+     & 'EBE=   ',1pE16.6,' WEIGHT=',1pE16.6,' (bending)'/
+     & 'ESC=   ',1pE16.6,' WEIGHT=',1pE16.6,' (SC local)'/
+     & 'ETORS= ',1pE16.6,' WEIGHT=',1pE16.6,' (torsional)'/
+     & 'ETORSD=',1pE16.6,' WEIGHT=',1pE16.6,' (double torsional)'/
+     & 'EHPB=  ',1pE16.6,' WEIGHT=',1pE16.6,
      & ' (SS bridges & dist. cnstr.)'/
-     & 'ECORR4=',1pE16.6,' WEIGHT=',1pD16.6,' (multi-body)'/
-     & 'ECORR5=',1pE16.6,' WEIGHT=',1pD16.6,' (multi-body)'/
-     & 'ECORR6=',1pE16.6,' WEIGHT=',1pD16.6,' (multi-body)'/
-     & 'EELLO= ',1pE16.6,' WEIGHT=',1pD16.6,' (electrostatic-local)'/
-     & 'ETURN3=',1pE16.6,' WEIGHT=',1pD16.6,' (turns, 3rd order)'/
-     & 'ETURN4=',1pE16.6,' WEIGHT=',1pD16.6,' (turns, 4th order)'/
-     & 'ETURN6=',1pE16.6,' WEIGHT=',1pD16.6,' (turns, 6th order)'/
-     & 'ESCCOR=',1pE16.6,' WEIGHT=',1pD16.6,' (backbone-rotamer corr)'/
+     & 'ECORR4=',1pE16.6,' WEIGHT=',1pE16.6,' (multi-body)'/
+     & 'ECORR5=',1pE16.6,' WEIGHT=',1pE16.6,' (multi-body)'/
+     & 'ECORR6=',1pE16.6,' WEIGHT=',1pE16.6,' (multi-body)'/
+     & 'EELLO= ',1pE16.6,' WEIGHT=',1pE16.6,' (electrostatic-local)'/
+     & 'ETURN3=',1pE16.6,' WEIGHT=',1pE16.6,' (turns, 3rd order)'/
+     & 'ETURN4=',1pE16.6,' WEIGHT=',1pE16.6,' (turns, 4th order)'/
+     & 'ETURN6=',1pE16.6,' WEIGHT=',1pE16.6,' (turns, 6th order)'/
+     & 'ESCCOR=',1pE16.6,' WEIGHT=',1pE16.6,' (backbone-rotamer corr)'/
      & 'EDIHC= ',1pE16.6,' (dihedral angle constraints)'/
      & 'ESS=   ',1pE16.6,' (disulfide-bridge intrinsic energy)'/
      & 'UCONST= ',1pE16.6,' (Constraint energy)'/ 
@@ -1420,7 +1449,7 @@ C
         do iint=1,nint_gr(i)
           do j=istart(i,iint),iend(i,iint)
             ind=ind+1
-            itypj=itype(j)
+            itypj=iabs(itype(j))
 c            dscj_inv=dsc_inv(itypj)
             dscj_inv=vbld_inv(j+nres)
             chi1=chi(itypi,itypj)
@@ -1529,6 +1558,7 @@ C
       include 'COMMON.IOUNITS'
       include 'COMMON.CALC'
       include 'COMMON.CONTROL'
+      include 'COMMON.SBRIDGE'
       logical lprn
       evdw=0.0D0
 ccccc      energy_dec=.false.
@@ -1557,6 +1587,27 @@ 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
+              if (energy_dec) write (iout,'(a6,2i5,0pf7.3,a3)') 
+     &                        'evdw',i,j,evdwij,' ss'
+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             
+              if (energy_dec) write (iout,'(a6,2i5,0pf7.3,a3)')
+     &                        'evdw',i,j,evdwij,'tss'
+              endif!dyn_ss_mask(k)
+             enddo! k
+            ELSE
+C            cycle
             ind=ind+1
             itypj=itype(j)
 c            dscj_inv=dsc_inv(itypj)
@@ -1666,6 +1717,7 @@ C Calculate angular part of the gradient.
 #else
             call sc_grad
 #endif
+            ENDIF    ! dyn_ss            
           enddo      ! j
         enddo        ! iint
       enddo          ! i
@@ -4239,49 +4291,96 @@ C iii and jjj point to the residues for which the distance is assigned.
           iii=ii
           jjj=jj
         endif
-cd        write (iout,*) "i",i," ii",ii," iii",iii," jj",jj," jjj",jjj
+c        write (iout,*) "i",i," ii",ii," iii",iii," jj",jj," jjj",jjj,
+c     &    dhpb(i),dhpb1(i),forcon(i)
 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. itype(iii).eq.1 .and. itype(jjj).eq.1) then
+cmc        if (ii.gt.nres .and. itype(iii).eq.1 .and. itype(jjj).eq.1) then
+C 18/07/06 MC: Use the convention that the first nss pairs are SS bonds
+        if (.not.dyn_ss .and. i.le.nss) then
+C 15/02/13 CC dynamic SSbond - additional check
+         if (ii.gt.nres 
+     &       .and. itype(iii).eq.1 .and. itype(jjj).eq.1) then 
           call ssbond_ene(iii,jjj,eij)
           ehpb=ehpb+2*eij
+         endif
 cd          write (iout,*) "eij",eij
+        else if (ii.gt.nres .and. jj.gt.nres) then
+c Restraints from contact prediction
+          dd=dist(ii,jj)
+          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  
+          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
 C Calculate the distance between the two points and its difference from the
 C target distance.
-        dd=dist(ii,jj)
-        rdis=dd-dhpb(i)
+          dd=dist(ii,jj)
+          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
+            fac=waga*rdis/dd
+          endif
 cd      print *,'i=',i,' ii=',ii,' jj=',jj,' dhpb=',dhpb(i),' dd=',dd,
 cd   &   ' waga=',waga,' fac=',fac
-        do j=1,3
-          ggg(j)=fac*(c(j,jj)-c(j,ii))
-        enddo
+            do j=1,3
+              ggg(j)=fac*(c(j,jj)-c(j,ii))
+            enddo
 cd      print '(i3,3(1pe14.5))',i,(ggg(j),j=1,3)
 C If this is a SC-SC distance, we need to calculate the contributions to the
 C Cartesian gradient in the SC vectors (ghpbx).
-        if (iii.lt.ii) then
+          if (iii.lt.ii) then
           do j=1,3
             ghpbx(j,iii)=ghpbx(j,iii)-ggg(j)
             ghpbx(j,jjj)=ghpbx(j,jjj)+ggg(j)
           enddo
-        endif
+          endif
 cgrad        do j=iii,jjj-1
 cgrad          do k=1,3
 cgrad            ghpbc(k,j)=ghpbc(k,j)+ggg(k)
 cgrad          enddo
 cgrad        enddo
-        do k=1,3
-          ghpbc(k,jjj)=ghpbc(k,jjj)+ggg(k)
-          ghpbc(k,iii)=ghpbc(k,iii)-ggg(k)
-        enddo
+          do k=1,3
+            ghpbc(k,jjj)=ghpbc(k,jjj)+ggg(k)
+            ghpbc(k,iii)=ghpbc(k,iii)-ggg(k)
+          enddo
         endif
       enddo
       ehpb=0.5D0*ehpb
@@ -4343,7 +4442,7 @@ c      dscj_inv=dsc_inv(itypj)
       deltat12=om2-om1+2.0d0
       cosphi=om12-om1*om2
       eij=akcm*deltad*deltad+akth*(deltat1*deltat1+deltat2*deltat2)
-     &  +akct*deltad*deltat12
+     &  +akct*deltad*deltat12+ebr
      &  +v1ss*cosphi+v2ss*cosphi*cosphi+v3ss*cosphi*cosphi*cosphi
 c      write(iout,*) i,j,"rij",rij,"d0cm",d0cm," akcm",akcm," akth",akth,
 c     &  " akct",akct," deltad",deltad," deltat",deltat1,deltat2,
@@ -4485,6 +4584,18 @@ c     write (*,'(a,i2)') 'EBEND ICG=',icg
 C Zero the energy function and its derivative at 0 or pi.
         call splinthet(theta(i),0.5d0*delta,ss,ssd)
         it=itype(i-1)
+        ichir1=isign(1,itype(i-2))
+        ichir2=isign(1,itype(i))
+         if (itype(i-2).eq.10) ichir1=isign(1,itype(i-1))
+         if (itype(i).eq.10) ichir2=isign(1,itype(i-1))
+         if (itype(i-1).eq.10) then
+          itype1=isign(10,itype(i-2))
+          ichir11=isign(1,itype(i-2))
+          ichir12=isign(1,itype(i-2))
+          itype2=isign(10,itype(i))
+          ichir21=isign(1,itype(i))
+          ichir22=isign(1,itype(i))
+         endif
         if (i.gt.3) then
 #ifdef OSF
          phii=phi(i)
@@ -4518,15 +4629,27 @@ C dependent on the adjacent virtual-bond-valence angles (gamma1 & gamma2).
 C In following comments this theta will be referred to as t_c.
         thet_pred_mean=0.0d0
         do k=1,2
-          athetk=athet(k,it)
-          bthetk=bthet(k,it)
+            athetk=athet(k,it,ichir1,ichir2)
+            bthetk=bthet(k,it,ichir1,ichir2)
+          if (it.eq.10) then
+             athetk=athet(k,itype1,ichir11,ichir12)
+             bthetk=bthet(k,itype2,ichir21,ichir22)
+          endif
           thet_pred_mean=thet_pred_mean+athetk*y(k)+bthetk*z(k)
         enddo
         dthett=thet_pred_mean*ssd
         thet_pred_mean=thet_pred_mean*ss+a0thet(it)
 C Derivatives of the "mean" values in gamma1 and gamma2.
-        dthetg1=(-athet(1,it)*y(2)+athet(2,it)*y(1))*ss
-        dthetg2=(-bthet(1,it)*z(2)+bthet(2,it)*z(1))*ss
+        dthetg1=(-athet(1,it,ichir1,ichir2)*y(2)
+     &+athet(2,it,ichir1,ichir2)*y(1))*ss
+         dthetg2=(-bthet(1,it,ichir1,ichir2)*z(2)
+     &          +bthet(2,it,ichir1,ichir2)*z(1))*ss
+         if (it.eq.10) then
+      dthetg1=(-athet(1,itype1,ichir11,ichir12)*y(2)
+     &+athet(2,itype1,ichir11,ichir12)*y(1))*ss
+        dthetg2=(-bthet(1,itype2,ichir21,ichir22)*z(2)
+     &         +bthet(2,itype2,ichir21,ichir22)*z(1))*ss
+         endif
         if (theta(i).gt.pi-delta) then
           call theteng(pi-delta,thet_pred_mean,theta0(it),f0,fprim0,
      &         E_tc0)
@@ -4724,6 +4847,9 @@ C
           enddo 
         endif
         if (i.lt.nres) then
+
+        if (iabs(itype(i+1)).eq.20) iblock=2
+        if (iabs(itype(i+1)).ne.20) iblock=1
 #ifdef OSF
           phii1=phi(i+1)
           if (phii1.ne.phii1) phii1=150.0
@@ -4744,7 +4870,7 @@ C
             sinph2(k)=0.0d0
           enddo
         endif  
-        ethetai=aa0thet(ityp1,ityp2,ityp3)
+         ethetai=aa0thet(ityp1,ityp2,ityp3,iblock)
         do k=1,ndouble
           do l=1,k-1
             ccl=cosph1(l)*cosph2(k-l)
         enddo
         endif
         do k=1,ntheterm
-          ethetai=ethetai+aathet(k,ityp1,ityp2,ityp3)*sinkt(k)
-          dethetai=dethetai+0.5d0*k*aathet(k,ityp1,ityp2,ityp3)
+          ethetai=ethetai+aathet(k,ityp1,ityp2,ityp3,iblock)*sinkt(k)
+          dethetai=dethetai+0.5d0*k*aathet(k,ityp1,ityp2,ityp3,iblock)
      &      *coskt(k)
           if (lprn)
-     &    write (iout,*) "k",k," aathet",aathet(k,ityp1,ityp2,ityp3),
+     &    write (iout,*) "k",k,
+     &    "aathet",aathet(k,ityp1,ityp2,ityp3,iblock),
      &     " ethetai",ethetai
         enddo
         if (lprn) then
         endif
         do m=1,ntheterm2
           do k=1,nsingle
-            aux=bbthet(k,m,ityp1,ityp2,ityp3)*cosph1(k)
-     &         +ccthet(k,m,ityp1,ityp2,ityp3)*sinph1(k)
-     &         +ddthet(k,m,ityp1,ityp2,ityp3)*cosph2(k)
-     &         +eethet(k,m,ityp1,ityp2,ityp3)*sinph2(k)
+            aux=bbthet(k,m,ityp1,ityp2,ityp3,iblock)*cosph1(k)
+     &         +ccthet(k,m,ityp1,ityp2,ityp3,iblock)*sinph1(k)
+     &         +ddthet(k,m,ityp1,ityp2,ityp3,iblock)*cosph2(k)
+     &         +eethet(k,m,ityp1,ityp2,ityp3,iblock)*sinph2(k)
             ethetai=ethetai+sinkt(m)*aux
             dethetai=dethetai+0.5d0*m*aux*coskt(m)
             dephii=dephii+k*sinkt(m)*(
-     &          ccthet(k,m,ityp1,ityp2,ityp3)*cosph1(k)-
-     &          bbthet(k,m,ityp1,ityp2,ityp3)*sinph1(k))
+     &          ccthet(k,m,ityp1,ityp2,ityp3,iblock)*cosph1(k)-
+     &          bbthet(k,m,ityp1,ityp2,ityp3,iblock)*sinph1(k))
             dephii1=dephii1+k*sinkt(m)*(
-     &          eethet(k,m,ityp1,ityp2,ityp3)*cosph2(k)-
-     &          ddthet(k,m,ityp1,ityp2,ityp3)*sinph2(k))
+     &          eethet(k,m,ityp1,ityp2,ityp3,iblock)*cosph2(k)-
+     &          ddthet(k,m,ityp1,ityp2,ityp3,iblock)*sinph2(k))
             if (lprn)
      &      write (iout,*) "m",m," k",k," bbthet",
-     &         bbthet(k,m,ityp1,ityp2,ityp3)," ccthet",
-     &         ccthet(k,m,ityp1,ityp2,ityp3)," ddthet",
-     &         ddthet(k,m,ityp1,ityp2,ityp3)," eethet",
-     &         eethet(k,m,ityp1,ityp2,ityp3)," ethetai",ethetai
+     &         bbthet(k,m,ityp1,ityp2,ityp3,iblock)," ccthet",
+     &         ccthet(k,m,ityp1,ityp2,ityp3,iblock)," ddthet",
+     &         ddthet(k,m,ityp1,ityp2,ityp3,iblock)," eethet",
+     &         eethet(k,m,ityp1,ityp2,ityp3,iblock)," ethetai",ethetai
           enddo
         enddo
         if (lprn)
         do m=1,ntheterm3
           do k=2,ndouble
             do l=1,k-1
-              aux=ffthet(l,k,m,ityp1,ityp2,ityp3)*cosph1ph2(l,k)+
-     &            ffthet(k,l,m,ityp1,ityp2,ityp3)*cosph1ph2(k,l)+
-     &            ggthet(l,k,m,ityp1,ityp2,ityp3)*sinph1ph2(l,k)+
-     &            ggthet(k,l,m,ityp1,ityp2,ityp3)*sinph1ph2(k,l)
+       aux=ffthet(l,k,m,ityp1,ityp2,ityp3,iblock)*cosph1ph2(l,k)+
+     & ffthet(k,l,m,ityp1,ityp2,ityp3,iblock)*cosph1ph2(k,l)+
+     & ggthet(l,k,m,ityp1,ityp2,ityp3,iblock)*sinph1ph2(l,k)+
+     & ggthet(k,l,m,ityp1,ityp2,ityp3,iblock)*sinph1ph2(k,l)
+
               ethetai=ethetai+sinkt(m)*aux
               dethetai=dethetai+0.5d0*m*coskt(m)*aux
               dephii=dephii+l*sinkt(m)*(
-     &           -ffthet(l,k,m,ityp1,ityp2,ityp3)*sinph1ph2(l,k)-
-     &            ffthet(k,l,m,ityp1,ityp2,ityp3)*sinph1ph2(k,l)+
-     &            ggthet(l,k,m,ityp1,ityp2,ityp3)*cosph1ph2(l,k)+
-     &            ggthet(k,l,m,ityp1,ityp2,ityp3)*cosph1ph2(k,l))
+     & -ffthet(l,k,m,ityp1,ityp2,ityp3,iblock)*sinph1ph2(l,k)-
+     &  ffthet(k,l,m,ityp1,ityp2,ityp3,iblock)*sinph1ph2(k,l)+
+     &  ggthet(l,k,m,ityp1,ityp2,ityp3,iblock)*cosph1ph2(l,k)+
+     &  ggthet(k,l,m,ityp1,ityp2,ityp3,iblock)*cosph1ph2(k,l))
+
               dephii1=dephii1+(k-l)*sinkt(m)*(
-     &           -ffthet(l,k,m,ityp1,ityp2,ityp3)*sinph1ph2(l,k)+
-     &            ffthet(k,l,m,ityp1,ityp2,ityp3)*sinph1ph2(k,l)+
-     &            ggthet(l,k,m,ityp1,ityp2,ityp3)*cosph1ph2(l,k)-
-     &            ggthet(k,l,m,ityp1,ityp2,ityp3)*cosph1ph2(k,l))
+     &-ffthet(l,k,m,ityp1,ityp2,ityp3,iblock)*sinph1ph2(l,k)+
+     & ffthet(k,l,m,ityp1,ityp2,ityp3,iblock)*sinph1ph2(k,l)+
+     & ggthet(l,k,m,ityp1,ityp2,ityp3,iblock)*cosph1ph2(l,k)-
+     & ggthet(k,l,m,ityp1,ityp2,ityp3,iblock)*cosph1ph2(k,l))
+
               if (lprn) then
               write (iout,*) "m",m," k",k," l",l," ffthet",
-     &            ffthet(l,k,m,ityp1,ityp2,ityp3),
-     &            ffthet(k,l,m,ityp1,ityp2,ityp3)," ggthet",
-     &            ggthet(l,k,m,ityp1,ityp2,ityp3),
-     &            ggthet(k,l,m,ityp1,ityp2,ityp3)," ethetai",ethetai
+     &            ffthet(l,k,m,ityp1,ityp2,ityp3,iblock),
+     &            ffthet(k,l,m,ityp1,ityp2,ityp3,iblock)," ggthet",
+     &            ggthet(l,k,m,ityp1,ityp2,ityp3,iblock),
+     &            ggthet(k,l,m,ityp1,ityp2,ityp3,iblock),
+     &            " ethetai",ethetai
+
               write (iout,*) cosph1ph2(l,k)*sinkt(m),
      &            cosph1ph2(k,l)*sinkt(m),
      &            sinph1ph2(l,k)*sinkt(m),sinph1ph2(k,l)*sinkt(m)
@@ -5187,7 +5319,7 @@ C
         cosfac=dsqrt(cosfac2)
         sinfac2=0.5d0/(1.0d0-costtab(i+1))
         sinfac=dsqrt(sinfac2)
-        it=itype(i)
+        it=iabs(itype(i))
         if (it.eq.10) goto 1
 c
 C  Compute the axes of tghe local cartesian coordinates system; store in
@@ -5205,7 +5337,7 @@ C     &   dc_norm(3,i+nres)
           y_prime(j) = (dc_norm(j,i) + dc_norm(j,i-1))*sinfac
         enddo
         do j = 1,3
-          z_prime(j) = -uz(j,i-1)
+          z_prime(j) = -uz(j,i-1)*dsign(1.0d0,dfloat(itype(i)))
         enddo     
 c       write (2,*) "i",i
 c       write (2,*) "x_prime",(x_prime(j),j=1,3)
@@ -5237,7 +5369,7 @@ C
 C Compute the energy of the ith side cbain
 C
 c        write (2,*) "xx",xx," yy",yy," zz",zz
-        it=itype(i)
+        it=iabs(itype(i))
         do j = 1,65
           x(j) = sc_parmin(j,it) 
         enddo
@@ -5245,7 +5377,7 @@ c        write (2,*) "xx",xx," yy",yy," zz",zz
 Cc diagnostics - remove later
         xx1 = dcos(alph(2))
         yy1 = dsin(alph(2))*dcos(omeg(2))
-        zz1 = -dsin(alph(2))*dsin(omeg(2))
+        zz1 = -dsign(1.0, dfloat(itype(i)))*dsin(alph(2))*dsin(omeg(2))
         write(2,'(3f8.1,3f9.3,1x,3f9.3)') 
      &    alph(2)*rad2deg,omeg(2)*rad2deg,theta(3)*rad2deg,xx,yy,zz,
      &    xx1,yy1,zz1
@@ -5415,8 +5547,10 @@ c     &   (dC_norm(j,i-1),j=1,3)," vbld_inv",vbld_inv(i+1),vbld_inv(i)
          dZZ_Ci1(k)=0.0d0
          dZZ_Ci(k)=0.0d0
          do j=1,3
-           dZZ_Ci(k)=dZZ_Ci(k)-uzgrad(j,k,2,i-1)*dC_norm(j,i+nres)
-           dZZ_Ci1(k)=dZZ_Ci1(k)-uzgrad(j,k,1,i-1)*dC_norm(j,i+nres)
+           dZZ_Ci(k)=dZZ_Ci(k)-uzgrad(j,k,2,i-1)
+     &     *dsign(1.0d0,dfloat(itype(i)))*dC_norm(j,i+nres)
+           dZZ_Ci1(k)=dZZ_Ci1(k)-uzgrad(j,k,1,i-1)
+     &     *dsign(1.0d0,dfloat(itype(i)))*dC_norm(j,i+nres)
          enddo
           
          dXX_XYZ(k)=vbld_inv(i+nres)*(x_prime(k)-xx*dC_norm(k,i+nres))
@@ -5650,7 +5784,7 @@ C Proline-Proline pair is a special case...
      &  restyp(itype(i-2)),i-2,restyp(itype(i-1)),i-1,itori,itori1,
      &  (v1(j,itori,itori1),j=1,6),(v2(j,itori,itori1),j=1,6)
         gloc(i-3,icg)=gloc(i-3,icg)+wtor*gloci
-c       write (iout,*) 'i=',i,' gloc=',gloc(i-3,icg)
+        write (iout,*) 'i=',i,' gloc=',gloc(i-3,icg)
       enddo
 ! 6/20/98 - dihedral angle constraints
       edihcnstr=0.0d0
@@ -5701,15 +5835,22 @@ C Set lprn=.true. for debugging
 c     lprn=.true.
       etors=0.0D0
       do i=iphi_start,iphi_end
-      etors_ii=0.0D0
+        if (itype(i-2).eq.ntyp1 .or. itype(i-1).eq.ntyp1 
+     &       .or. itype(i).eq.ntyp1) cycle
+        etors_ii=0.0D0
+         if (iabs(itype(i)).eq.20) then
+         iblock=2
+         else
+         iblock=1
+         endif
         itori=itortyp(itype(i-2))
         itori1=itortyp(itype(i-1))
         phii=phi(i)
         gloci=0.0D0
 C Regular cosine and sine terms
-        do j=1,nterm(itori,itori1)
-          v1ij=v1(j,itori,itori1)
-          v2ij=v2(j,itori,itori1)
+        do j=1,nterm(itori,itori1,iblock)
+          v1ij=v1(j,itori,itori1,iblock)
+          v2ij=v2(j,itori,itori1,iblock)
           cosphi=dcos(j*phii)
           sinphi=dsin(j*phii)
           etors=etors+v1ij*cosphi+v2ij*sinphi
@@ -5724,7 +5865,7 @@ C          [v2 cos(phi/2)+v3 sin(phi/2)]^2 + 1
 C
         cosphi=dcos(0.5d0*phii)
         sinphi=dsin(0.5d0*phii)
-        do j=1,nlor(itori,itori1)
+        do j=1,nlor(itori,itori1,iblock)
           vl1ij=vlor1(j,itori,itori1)
           vl2ij=vlor2(j,itori,itori1)
           vl3ij=vlor3(j,itori,itori1)
           gloci=gloci+vl1ij*(vl3ij*cosphi-vl2ij*sinphi)*pom
         enddo
 C Subtract the constant term
-        etors=etors-v0(itori,itori1)
+        etors=etors-v0(itori,itori1,iblock)
           if (energy_dec) write (iout,'(a6,i5,0pf7.3)')
-     &         'etor',i,etors_ii-v0(itori,itori1)
+     &         'etor',i,etors_ii-v0(itori,itori1,iblock)
         if (lprn)
      &  write (iout,'(2(a3,2x,i3,2x),2i3,6f8.3/26x,6f8.3/)')
      &  restyp(itype(i-2)),i-2,restyp(itype(i-1)),i-1,itori,itori1,
-     &  (v1(j,itori,itori1),j=1,6),(v2(j,itori,itori1),j=1,6)
+     &  (v1(j,itori,itori1,iblock),j=1,6),
+     &  (v2(j,itori,itori1,iblock),j=1,6)
         gloc(i-3,icg)=gloc(i-3,icg)+wtor*gloci
 c       write (iout,*) 'i=',i,' gloc=',gloc(i-3,icg)
       enddo
@@ -5765,6 +5907,7 @@ c      do i=1,ndih_constr
         else
           difi=0.0
         endif
+c        write (iout,*) "gloci", gloc(i-3,icg)
 cd        write (iout,'(2i5,4f8.3,2e14.5)') i,itori,rad2deg*phii,
 cd     &    rad2deg*phi0(i),  rad2deg*drange(i),
 cd     &    rad2deg*difi,0.25d0*ftors*difi**4,gloc(itori-3,icg)
@@ -5793,7 +5936,10 @@ C Set lprn=.true. for debugging
       lprn=.false.
 c     lprn=.true.
       etors_d=0.0D0
+c      write(iout,*) "a tu??"
       do i=iphid_start,iphid_end
+        if (itype(i-2).eq.ntyp1 .or. itype(i-1).eq.ntyp1
+     &      .or. itype(i).eq.ntyp1 .or. itype(i+1).eq.ntyp1) cycle
         itori=itortyp(itype(i-2))
         itori1=itortyp(itype(i-1))
         itori2=itortyp(itype(i))
@@ -5801,12 +5947,15 @@ c     lprn=.true.
         phii1=phi(i+1)
         gloci1=0.0D0
         gloci2=0.0D0
+        iblock=1
+        if (iabs(itype(i+1)).eq.20) iblock=2
+
 C Regular cosine and sine terms
-        do j=1,ntermd_1(itori,itori1,itori2)
-          v1cij=v1c(1,j,itori,itori1,itori2)
-          v1sij=v1s(1,j,itori,itori1,itori2)
-          v2cij=v1c(2,j,itori,itori1,itori2)
-          v2sij=v1s(2,j,itori,itori1,itori2)
+        do j=1,ntermd_1(itori,itori1,itori2,iblock)
+          v1cij=v1c(1,j,itori,itori1,itori2,iblock)
+          v1sij=v1s(1,j,itori,itori1,itori2,iblock)
+          v2cij=v1c(2,j,itori,itori1,itori2,iblock)
+          v2sij=v1s(2,j,itori,itori1,itori2,iblock)
           cosphi1=dcos(j*phii)
           sinphi1=dsin(j*phii)
           cosphi2=dcos(j*phii1)
@@ -5816,12 +5965,12 @@ C Regular cosine and sine terms
           gloci1=gloci1+j*(v1sij*cosphi1-v1cij*sinphi1)
           gloci2=gloci2+j*(v2sij*cosphi2-v2cij*sinphi2)
         enddo
-        do k=2,ntermd_2(itori,itori1,itori2)
+        do k=2,ntermd_2(itori,itori1,itori2,iblock)
           do l=1,k-1
-            v1cdij = v2c(k,l,itori,itori1,itori2)
-            v2cdij = v2c(l,k,itori,itori1,itori2)
-            v1sdij = v2s(k,l,itori,itori1,itori2)
-            v2sdij = v2s(l,k,itori,itori1,itori2)
+            v1cdij = v2c(k,l,itori,itori1,itori2,iblock)
+            v2cdij = v2c(l,k,itori,itori1,itori2,iblock)
+            v1sdij = v2s(k,l,itori,itori1,itori2,iblock)
+            v2sdij = v2s(l,k,itori,itori1,itori2,iblock)
             cosphi1p2=dcos(l*phii+(k-l)*phii1)
             cosphi1m2=dcos(l*phii-(k-l)*phii1)
             sinphi1p2=dsin(l*phii+(k-l)*phii1)
@@ -5866,28 +6015,62 @@ c        amino-acid residues.
 C Set lprn=.true. for debugging
       lprn=.false.
 c      lprn=.true.
-c      write (iout,*) "EBACK_SC_COR",iphi_start,iphi_end,nterm_sccor
+c     write (iout,*) "EBACK_SC_COR",itau_start,itau_end
       esccor=0.0D0
-      do i=iphi_start,iphi_end
+      do i=itau_start,itau_end
         esccor_ii=0.0D0
-        itori=itype(i-2)
-        itori1=itype(i-1)
+        if ((itype(i-2).eq.ntyp1).or.(itype(i-1).eq.ntyp1)) cycle
+        isccori=isccortyp(itype(i-2))
+        isccori1=isccortyp(itype(i-1))
         phii=phi(i)
+cccc  Added 9 May 2012
+cc Tauangle is torsional engle depending on the value of first digit 
+c(see comment below)
+cc Omicron is flat angle depending on the value of first digit 
+c(see comment below)
+
+        
+        do intertyp=1,3 !intertyp
+cc Added 09 May 2012 (Adasko)
+cc  Intertyp means interaction type of backbone mainchain correlation: 
+c   1 = SC...Ca...Ca...Ca
+c   2 = Ca...Ca...Ca...SC
+c   3 = SC...Ca...Ca...SCi
         gloci=0.0D0
-        do j=1,nterm_sccor
-          v1ij=v1sccor(j,itori,itori1)
-          v2ij=v2sccor(j,itori,itori1)
-          cosphi=dcos(j*phii)
-          sinphi=dsin(j*phii)
+        if (((intertyp.eq.3).and.((itype(i-2).eq.10).or.
+     &      (itype(i-1).eq.10).or.(itype(i-2).eq.ntyp1).or.
+     &      (itype(i-1).eq.ntyp1)))
+     &    .or. ((intertyp.eq.1).and.((itype(i-2).eq.10)
+     &     .or.(itype(i-2).eq.ntyp1).or.(itype(i-1).eq.ntyp1)
+     &     .or.(itype(i).eq.ntyp1)))
+     &    .or.((intertyp.eq.2).and.((itype(i-1).eq.10).or.
+     &      (itype(i-1).eq.ntyp1).or.(itype(i-2).eq.ntyp1).or.
+     &      (itype(i-3).eq.ntyp1)))) cycle
+        if ((intertyp.eq.2).and.(i.eq.4).and.(itype(1).eq.ntyp1)) cycle
+        if ((intertyp.eq.1).and.(i.eq.nres).and.(itype(nres).eq.ntyp1))
+     & cycle
+        do j=1,nterm_sccor(isccori,isccori1)
+          v1ij=v1sccor(j,intertyp,isccori,isccori1)
+          v2ij=v2sccor(j,intertyp,isccori,isccori1)
+          cosphi=dcos(j*tauangle(intertyp,i))
+          sinphi=dsin(j*tauangle(intertyp,i))
           esccor=esccor+v1ij*cosphi+v2ij*sinphi
           gloci=gloci+j*(v2ij*cosphi-v1ij*sinphi)
         enddo
+        gloc_sc(intertyp,i-3,icg)=gloc_sc(intertyp,i-3,icg)+wsccor*gloci
+c        write (iout,*) "WTF",intertyp,i,itype(i),v1ij*cosphi+v2ij*sinphi
+c     &gloc_sc(intertyp,i-3,icg)
         if (lprn)
      &  write (iout,'(2(a3,2x,i3,2x),2i3,6f8.3/26x,6f8.3/)')
-     &  restyp(itype(i-2)),i-2,restyp(itype(i-1)),i-1,itori,itori1,
-     &  (v1sccor(j,itori,itori1),j=1,6),(v2sccor(j,itori,itori1),j=1,6)
+     &  restyp(itype(i-2)),i-2,restyp(itype(i-1)),i-1,isccori,isccori1,
+     &  (v1sccor(j,intertyp,isccori,isccori1),j=1,6)
+     & ,(v2sccor(j,intertyp,isccori,isccori1),j=1,6)
         gsccor_loc(i-3)=gsccor_loc(i-3)+gloci
+       enddo !intertyp
       enddo
+c        do i=1,nres
+c        write (iout,*) "W@T@F",  gloc_sc(1,i,icg),gloc(i,icg)
+c        enddo
       return
       end
 c----------------------------------------------------------------------------
@@ -7994,9 +8177,9 @@ C
 C      Parallel       Antiparallel
 C                                             
 C          o             o         
-C         /l\           /j\       
-C        /   \         /   \      
-C       /| o |         | o |\     
+C         /l\           /j\
+C        /   \         /   \
+C       /| o |         | o |\
 C     \ j|/k\|  /   \  |/k\|l /   
 C      \ /   \ /     \ /   \ /    
 C       o     o       o     o                
@@ -8091,22 +8274,22 @@ c----------------------------------------------------------------------------
       include 'COMMON.GEO'
       logical swap
       double precision vv(2),pizda(2,2),auxmat(2,2),auxvec(2),
-     & auxvec1(2),auxvec2(1),auxmat1(2,2)
+     & auxvec1(2),auxvec2(2),auxmat1(2,2)
       logical lprn
       common /kutas/ lprn
 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
-C                                              
-C      Parallel       Antiparallel
-C                                             
-C          o             o         
-C     \   /l\           /j\   /   
-C      \ /   \         /   \ /    
-C       o| o |         | o |o     
-C     \ j|/k\|      \  |/k\|l     
-C      \ /   \       \ /   \      
-C       o             o                      
-C       i             i                     
-C
+C                                                                              C
+C      Parallel       Antiparallel                                             C
+C                                                                              C
+C          o             o                                                     C
+C     \   /l\           /j\   /                                                C
+C      \ /   \         /   \ /                                                 C
+C       o| o |         | o |o                                                  C                
+C     \ j|/k\|      \  |/k\|l                                                  C
+C      \ /   \       \ /   \                                                   C
+C       o             o                                                        C
+C       i             i                                                        C 
+C                                                                              C           
 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
 cd      write (2,*) 'eello6_graph2: i,',i,' j',j,' k',k,' l',l
 C AL 7/4/01 s1 would occur in the sixth-order moment, 
@@ -8277,18 +8460,18 @@ c----------------------------------------------------------------------------
       double precision vv(2),pizda(2,2),auxmat(2,2),auxvec(2)
       logical swap
 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
-C                                              
-C      Parallel       Antiparallel
-C                                             
-C          o             o         
-C         /l\   /   \   /j\       
-C        /   \ /     \ /   \      
-C       /| o |o       o| o |\     
-C       j|/k\|  /      |/k\|l /   
-C        /   \ /       /   \ /    
-C       /     o       /     o                
-C       i             i                     
-C
+C                                                                              C 
+C      Parallel       Antiparallel                                             C
+C                                                                              C
+C          o             o                                                     C 
+C         /l\   /   \   /j\                                                    C 
+C        /   \ /     \ /   \                                                   C
+C       /| o |o       o| o |\                                                  C
+C       j|/k\|  /      |/k\|l /                                                C
+C        /   \ /       /   \ /                                                 C
+C       /     o       /     o                                                  C
+C       i             i                                                        C
+C                                                                              C
 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
 C
 C 4/7/01 AL Component s1 was removed, because it pertains to the respective 
@@ -8394,18 +8577,18 @@ c----------------------------------------------------------------------------
      & auxvec1(2),auxmat1(2,2)
       logical swap
 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
-C                                              
-C      Parallel       Antiparallel
-C                                             
-C          o             o         
-C         /l\   /   \   /j\       
-C        /   \ /     \ /   \      
-C       /| o |o       o| o |\     
-C     \ j|/k\|      \  |/k\|l     
-C      \ /   \       \ /   \      
-C       o     \       o     \                
-C       i             i                     
-C
+C                                                                              C                       
+C      Parallel       Antiparallel                                             C
+C                                                                              C
+C          o             o                                                     C
+C         /l\   /   \   /j\                                                    C
+C        /   \ /     \ /   \                                                   C
+C       /| o |o       o| o |\                                                  C
+C     \ j|/k\|      \  |/k\|l                                                  C
+C      \ /   \       \ /   \                                                   C 
+C       o     \       o     \                                                  C
+C       i             i                                                        C
+C                                                                              C 
 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
 C
 C 4/7/01 AL Component s1 was removed, because it pertains to the respective