DIST2_CUT introduced for homology to remove restraints
[unres.git] / source / unres / src_MD / readrtns.F
index 4fd5a31..6b59d69 100644 (file)
@@ -997,6 +997,20 @@ C Convert sequence to numeric code
         do i=1,nres
           itype(i)=rescode(i,sequence(i),iscode)
         enddo
+        if (itype(2).eq.10.and.itype(1).eq.ntyp1) then
+          write (iout,*) 
+     &     "Glycine is the first full residue, initial dummy deleted"
+          do i=1,nres
+            itype(i)=itype(i+1)
+          enddo
+          nres=nres-1
+        endif
+        if (itype(nres-1).eq.10.and.itype(nres).eq.ntyp1) then
+          write (iout,*) 
+     &     "Glycine is the last full residue, terminal dummy deleted"
+          nres=nres-1
+        endif
+
 C Assign initial virtual bond lengths
         do i=2,nres
           vbld(i)=vbl
@@ -2567,6 +2581,7 @@ c      call flush(iout)
       call readi(controlcard,"NPAIR",npair_,0)
       call readi(controlcard,"NDIST",ndist_,0)
       call reada(controlcard,'DIST_CUT',dist_cut,5.0d0)
+      call reada(controlcard,'DIST2_CUT',dist2_cut,9999.0d0)
       call multreadi(controlcard,"IFRAG",ifrag_(1,1),2*nfrag_,0)
       call multreadi(controlcard,"IPAIR",ipair_(1,1),2*npair_,0)
       call multreada(controlcard,"WFRAG",wfrag_(1),nfrag_,0.0d0)
@@ -2719,8 +2734,10 @@ c    &    sigma_odl_temp(maxres,maxres,max_template)
       character*2 kic2
       character*24 model_ki_dist, model_ki_angle
       character*500 controlcard
-      integer ki, i, j, k, l, ii_in_use(maxdim)
+      integer ki, i, j, k, l, ii_in_use(maxdim),i_tmp,idomain_tmp
       logical lprn /.true./
+      integer ilen
+      external ilen
 c
 c     FP - Nov. 2014 Temporary specifications for new vars
 c
@@ -2745,6 +2762,16 @@ c Alternative: reading from input
  
       call readi(controlcard,"HOMOL_NSET",homol_nset,1)       
       read2sigma=(index(controlcard,'READ2SIGMA').gt.0)
+      start_from_model=(index(controlcard,'START_FROM_MODELS').gt.0)
+      if(.not.read2sigma.and.start_from_model) then
+          write(iout,*) 'START_FROM_MODELS works only with READ2SIGMA'
+          start_from_model=.false.
+      endif
+      if(start_from_model) write(iout,*) 'START_FROM_MODELS is ON'
+      if(start_from_model .and. rest) then 
+        write(iout,*) 'START_FROM_MODELS is OFF'
+        write(iout,*) 'remove restart keyword from input'
+      endif
       if (homol_nset.gt.1)then
          call card_concat(controlcard)
          read(controlcard,*) (waga_homology(i),i=1,homol_nset) 
@@ -2772,6 +2799,14 @@ c
       lim_theta=0
       lim_xx=0
 c
+      write(iout,*) 'nnt=',nnt,'nct=',nct
+c
+      do i = nnt,nct
+        do k=1,constr_homology
+         idomain(k,i)=0
+        enddo
+      enddo
+
       ii=0
       do i = nnt,nct-2 
         do j=i+2,nct 
@@ -2782,6 +2817,20 @@ c
 
       do k=1,constr_homology
 
+        read(inp,'(a)') pdbfile
+c  Next stament causes error upon compilation (?)
+c       if(me.eq.king.or. .not. out1file)
+c         write (iout,'(2a)') 'PDB data will be read from file ',
+c    &   pdbfile(:ilen(pdbfile))
+         write (iout,'(a,5x,a)') 'HOMOL: Opening PDB file',
+     &  pdbfile(:ilen(pdbfile))
+        open(ipdbin,file=pdbfile,status='old',err=33)
+        goto 34
+  33    write (iout,'(a,5x,a)') 'Error opening PDB file',
+     &  pdbfile(:ilen(pdbfile))
+        stop
+  34    continue
+c        print *,'Begin reading pdb data'
 c
 c Files containing res sim or local scores (former containing sigmas)
 c
 
         tpl_k_rescore="template"//kic2//".sco"
 
+        unres_pdb=.false.
+        if (read2sigma) then
+          call readpdb_template(k)
+        else
+          call readpdb
+        endif
+c
+c     Distance restraints
+c
+c          ... --> odl(k,ii)
+C Copy the coordinates from reference coordinates (?)
+        do i=1,2*nres
+          do j=1,3
+            c(j,i)=cref(j,i)
+c           write (iout,*) "c(",j,i,") =",c(j,i)
+          enddo
+        enddo
 c
 c From read_dist_constr (commented out 25/11/2014 <-> res sim)
 c
 c         write(iout,*) "tpl_k_rescore - ",tpl_k_rescore
           open (ientin,file=tpl_k_rescore,status='old')
-          do irec=1,maxdim ! loop for reading res sim 
-            if (irec.eq.1) then
-               rescore(k,irec)=0.0d0
-               goto 1301 
-            endif
+          if (nnt.gt.1) rescore(k,1)=0.0d0
+          do irec=nnt,maxdim ! loop for reading res sim 
             if (read2sigma) then
-             read (ientin,*,end=1401) rescore2_tmp,rescore_tmp,
-     &                                idomain(k,irec)
-             rescore(k,irec)=0.5d0*(rescore_tmp+0.5d0)
-             rescore2(k,irec)=0.5d0*(rescore2_tmp+0.5d0)
+             read (ientin,*,end=1401) i_tmp,rescore2_tmp,rescore_tmp,
+     &                                idomain_tmp
+             i_tmp=i_tmp+nnt-1
+             idomain(k,i_tmp)=idomain_tmp
+             rescore(k,i_tmp)=rescore_tmp
+             rescore2(k,i_tmp)=rescore2_tmp
             else
              idomain(k,irec)=1
              read (ientin,*,end=1401) rescore_tmp
@@ -2813,51 +2878,23 @@ c           rescore(k,irec)=rescore_tmp+1.0d0 ! to avoid 0 values
              rescore(k,irec)=0.5d0*(rescore_tmp+0.5d0) ! alt transf to reduce scores
 c           write(iout,*) "rescore(",k,irec,") =",rescore(k,irec)
             endif
- 1301     continue
           enddo  
  1401   continue
-          close (ientin)        
-
-        read(inp,'(a)') pdbfile
-c  Next stament causes error upon compilation (?)
-c       if(me.eq.king.or. .not. out1file)
-c         write (iout,'(2a)') 'PDB data will be read from file ',
-c    &   pdbfile(:ilen(pdbfile))
-        open(ipdbin,file=pdbfile,status='old',err=33)
-        goto 34
-  33    write (iout,'(a)') 'Error opening PDB file.'
-        stop
-  34    continue
-c        print *,'Begin reading pdb data'
+        close (ientin)        
+        if (waga_dist.ne.0.0d0) then
+          ii=0
+          do i = nnt,nct-2 
+            do j=i+2,nct 
 
-        unres_pdb=.false.
-        if (read2sigma) then
-         call readpdb_template(k)
-        else
-         call readpdb
-        endif
-c
-C Copy the coordinates from reference coordinates (?)
-        do i=1,2*nres
-          do j=1,3
-            c(j,i)=cref(j,i)
-c           write (iout,*) "c(",j,i,") =",c(j,i)
-          enddo
-        enddo
+              x12=c(1,i)-c(1,j)
+              y12=c(2,i)-c(2,j)
+              z12=c(3,i)-c(3,j)
+              distal=dsqrt(x12*x12+y12*y12+z12*z12) 
 
 
+            if (idomain(k,i).eq.idomain(k,j).and.idomain(k,i).ne.0
+     &            .and. distal.le.dist2_cut ) then
 
-        if (waga_dist.ne.0.0d0) then
-          ii=0
-          do i = nnt,nct-2 ! right? without parallel.
-            do j=i+2,nct ! right?
-c         do i = 1,nres ! alternative for bounds as used to set initial values in orig. read_constr_homology 
-c           do j=i+2,nres ! ibid
-c         do i = nnt,nct-2 ! alternative for bounds as used to assign dist restraints in orig. read_constr_homology (s. above)
-c           do j=i+2,nct ! ibid
-
-            if (idomain(k,i).eq.idomain(k,j).and.idomain(k,i).ne.0) then
-                  
               ii=ii+1
               ii_in_use(ii)=1
               l_homo(k,ii)=.true.
@@ -2867,63 +2904,29 @@ c             write (iout,*) "i",i," j",j," constr_homology",
 c    &                       constr_homology
               ires_homo(ii)=i
               jres_homo(ii)=j
-c
-c Attempt to replace dist(i,j) by its definition in ...
-c
-              x12=c(1,i)-c(1,j)
-              y12=c(2,i)-c(2,j)
-              z12=c(3,i)-c(3,j)
-              distal=dsqrt(x12*x12+y12*y12+z12*z12)
               odl(k,ii)=distal
-c
-c             odl(k,ii)=dist(i,j)
-c             write (iout,*) "dist(",i,j,") =",dist(i,j)
-c             write (iout,*) "distal = ",distal
-c             write (iout,*) "odl(",k,ii,") =",odl(k,ii)
-c            write(iout,*) "rescore(",k,i,") =",rescore(k,i),
-c    &                      "rescore(",k,j,") =",rescore(k,j)
-c
-c  Calculation of sigma from res sim
-c
-c             if (odl(k,ii).le.6.0d0) then
-c             sigma_odl(k,ii)=hmscore(k)*rescore(k,i)*rescore(k,j)
-c    Other functional forms possible depending on odl(k,ii), eg.
-c
-           if (read2sigma) then
-            sigma_odl(k,ii)=0
-            do ik=i,j
-              sigma_odl(k,ii)=sigma_odl(k,ii)+rescore2(k,ik)
-            enddo
-            sigma_odl(k,ii)=sigma_odl(k,ii)/(j-i+1)
-            if (odl(k,ii).gt.dist_cut) sigma_odl(k,ii) = 
-     &         sigma_odl(k,ii)*dexp(0.5d0*(odl(k,ii)/dist_cut)**2-0.5d0)
-           else
-            if (odl(k,ii).le.dist_cut) then              
-              sigma_odl(k,ii)=rescore(k,i)+rescore(k,j) ! other exprs possible
-c             sigma_odl(k,ii)=hmscore(k)*rescore(k,i)*rescore(k,j)
-            else
+              if (read2sigma) then
+                sigma_odl(k,ii)=0
+                do ik=i,j
+                 sigma_odl(k,ii)=sigma_odl(k,ii)+rescore2(k,ik)
+                enddo
+                sigma_odl(k,ii)=sigma_odl(k,ii)/(j-i+1)
+                if (odl(k,ii).gt.dist_cut) sigma_odl(k,ii) = 
+     &        sigma_odl(k,ii)*dexp(0.5d0*(odl(k,ii)/dist_cut)**2-0.5d0)
+              else
+                if (odl(k,ii).le.dist_cut) then
+                 sigma_odl(k,ii)=rescore(k,i)+rescore(k,j) 
+                else
 #ifdef OLDSIGMA
-              sigma_odl(k,ii)=(rescore(k,i)+rescore(k,j))* ! sigma ~ rescore ~ error 
+                 sigma_odl(k,ii)=(rescore(k,i)+rescore(k,j))* 
      &                      dexp(0.5d0*(odl(k,ii)/dist_cut)**2)
 #else
-              sigma_odl(k,ii)=(rescore(k,i)+rescore(k,j))* ! sigma ~ rescore ~ error 
+                 sigma_odl(k,ii)=(rescore(k,i)+rescore(k,j))* 
      &                      dexp(0.5d0*(odl(k,ii)/dist_cut)**2-0.5d0)
 #endif
-            endif
-           endif
-c   Following expr replaced by a positive exp argument
-c             sigma_odl(k,ii)=(rescore(k,i)+rescore(k,j))*
-c    &                      dexp(-0.5d0*(odl(k,ii)/dist_cut)**2)
-
-c             sigma_odl(k,ii)=hmscore(k)*rescore(k,i)*rescore(k,j)*
-c    &                      dexp(-0.5d0*(odl(k,ii)/dist_cut)**2)
-            
-c
-              sigma_odl(k,ii)=1.0d0/(sigma_odl(k,ii)*sigma_odl(k,ii)) ! rescore ~ error
-c             sigma_odl(k,ii)=sigma_odl(k,ii)*sigma_odl(k,ii)
-c
-c             sigma_odl(k,ii)=sigma_odl_temp(i,j,k)* ! new var read from file (?)
-c    &                        sigma_odl_temp(i,j,k)  ! not inverse because of use of res. similarity
+                endif
+              endif
+              sigma_odl(k,ii)=1.0d0/(sigma_odl(k,ii)*sigma_odl(k,ii)) 
             else
               ii=ii+1
               l_homo(k,ii)=.false.
@@ -2945,10 +2948,7 @@ c    &                            sigma_dih(k,i+nnt-1)
 c         enddo
 c1402   continue
 c         close (ientin)
-          do i = nnt+3,nct ! right? without parallel.
-c         do i=1,nres ! alternative for bounds acc to readpdb?
-c         do i=1,nres-3 ! alternative for bounds as used to set initial values in orig. read_constr_homology
-c         do i=idihconstr_start_homo,idihconstr_end_homo ! with FG parallel.
+          do i = nnt+3,nct 
             if (idomain(k,i).eq.0) then 
                sigma_dih(k,i)=0.0
                cycle
@@ -2961,9 +2961,9 @@ c    &                      "rescore(",k,i-1,") =",rescore(k,i-1),
 c    &                      "rescore(",k,i-2,") =",rescore(k,i-2),
 c    &                      "rescore(",k,i-3,") =",rescore(k,i-3)
 
-            sigma_dih(k,i)=rescore(k,i)+rescore(k,i-1)+
-     &                     rescore(k,i-2)+rescore(k,i-3)  !  right expression ?
-c
+            sigma_dih(k,i)=(rescore(k,i)+rescore(k,i-1)+
+     &                     rescore(k,i-2)+rescore(k,i-3))/4.0
+c            if (read2sigma) sigma_dih(k,i)=sigma_dih(k,i)/4.0
 c           write (iout,*) "Raw sigmas for dihedral angle restraints"
 c           write (iout,'(i5,10(2f8.2,4x))') i,sigma_dih(k,i)
 c           sigma_dih(k,i)=hmscore(k)*rescore(k,i)*rescore(k,i-1)*
@@ -2998,8 +2998,9 @@ c            write(iout,*)  "rescore(",k,i,") =",rescore(k,i),
 c    &                      "rescore(",k,i-1,") =",rescore(k,i-1),
 c    &                      "rescore(",k,i-2,") =",rescore(k,i-2)
 c            read (ientin,*) sigma_theta(k,i) ! 1st variant
-             sigma_theta(k,i)=rescore(k,i)+rescore(k,i-1)+
-     &                        rescore(k,i-2) !  right expression ?
+             sigma_theta(k,i)=(rescore(k,i)+rescore(k,i-1)+
+     &                        rescore(k,i-2))/3.0
+c             if (read2sigma) sigma_theta(k,i)=sigma_theta(k,i)/3.0
              sigma_theta(k,i)=1.0d0/(sigma_theta(k,i)*sigma_theta(k,i))
 
 c            sigma_theta(k,i)=hmscore(k)*rescore(k,i)*rescore(k,i-1)*
@@ -3017,7 +3018,6 @@ c            sigma_d(k,i+nnt-1)=sigma_d(k,i+nnt-1)* ! not inverse because of use
 c    &                          sigma_d(k,i+nnt-1)
 c         enddo
 c1404   continue
-          
 
           do i = nnt,nct ! right? without parallel.
 c         do i=2,nres-1 ! alternative for bounds acc to readpdb?
@@ -3040,6 +3040,7 @@ c              write(iout,*)  "rescore(",k,i,") =",rescore(k,i)
 c              sigma_d(k,i)=hmscore(k)*rescore(k,i) !  right expression ?
 c              sigma_d(k,i)=sigma_d(k,i)*sigma_d(k,i)
 c              read (ientin,*) sigma_d(k,i) ! 1st variant
+               if (i-nnt+1.gt.lim_xx) lim_xx=i-nnt+1 ! right?
           enddo
           lim_xx=nct-nnt+1 
         endif