readpdb & fort.2 from unres
[unres.git] / source / cluster / wham / src-HCD / readpdb.F
index 2e73601..98e538e 100644 (file)
@@ -21,6 +21,7 @@ C geometry.
       character*80 card
       double precision sccor(3,20)
       integer rescode
+      integer iterter(maxres)
       efree_temp=0.0d0
       ibeg=1
       ishift1=0
@@ -34,53 +35,73 @@ c      write (2,*) "UNRES_PDB",unres_pdb
       nbfrag=0
       do
         read (ipdbin,'(a80)',end=10) card
-c        write (iout,'(a)') card
+!       write (iout,'(a)') card
         if (card(:5).eq.'HELIX') then
-         nhfrag=nhfrag+1
-         lsecondary=.true.
-         read(card(22:25),*) hfrag(1,nhfrag)
-         read(card(34:37),*) hfrag(2,nhfrag)
+          nhfrag=nhfrag+1
+          lsecondary=.true.
+          read(card(22:25),*) hfrag(1,nhfrag)
+          read(card(34:37),*) hfrag(2,nhfrag)
         endif
         if (card(:5).eq.'SHEET') then
-         nbfrag=nbfrag+1
-         lsecondary=.true.
-         read(card(24:26),*) bfrag(1,nbfrag)
-         read(card(35:37),*) bfrag(2,nbfrag)
-crc----------------------------------------
-crc  to be corrected !!!
-         bfrag(3,nbfrag)=bfrag(1,nbfrag)
-         bfrag(4,nbfrag)=bfrag(2,nbfrag)
-crc----------------------------------------
+          nbfrag=nbfrag+1
+          lsecondary=.true.
+          read(card(24:26),*) bfrag(1,nbfrag)
+          read(card(35:37),*) bfrag(2,nbfrag)
+!rc----------------------------------------
+!rc  to be corrected !!!
+          bfrag(3,nbfrag)=bfrag(1,nbfrag)
+          bfrag(4,nbfrag)=bfrag(2,nbfrag)
+!rc----------------------------------------
         endif
-        if (card(:3).eq.'END' .or. card(:3).eq.'TER') goto 10
-c Read free energy
+        if (card(:3).eq.'END') then
+          goto 10
+        else if (card(:3).eq.'TER') then
+! End current chain
+          ires_old=ires+2
+          itype(ires_old-1)=ntyp1
+          iterter(ires_old-1)=1
+          itype(ires_old)=ntyp1
+          ishift1=ishift1+1
+          ibeg=2
+!          write (iout,*) "Chain ended",ires,ishift,ires_old
+          if (unres_pdb) then
+            do j=1,3
+              dc(j,ires)=sccor(j,iii)
+            enddo
+          else
+            call sccenter(ires,iii,sccor)
+          endif
+c          iii=0
+        endif
+! Read free energy
         if (index(card,"FREE ENERGY").gt.0) read(card(35:),*) efree_temp
-C Fish out the ATOM cards.
+! Fish out the ATOM cards.
         if (index(card(1:4),'ATOM').gt.0) then  
           read (card(12:16),*) atom
-c          write (iout,*) "! ",atom," !",ires
-c          if (atom.eq.'CA' .or. atom.eq.'CH3') then
+c          write (2,'(a)') card
+!          write (iout,*) "! ",atom," !",ires
+!          if (atom.eq.'CA' .or. atom.eq.'CH3') then
           read (card(23:26),*) ires
           read (card(18:20),'(a3)') res
-c          write (iout,*) "ires",ires,ires-ishift+ishift1,
-c     &      " ires_old",ires_old
-c          write (iout,*) "ishift",ishift," ishift1",ishift1
-c          write (iout,*) "IRES",ires-ishift+ishift1,ires_old
+!          write (iout,*) "ires",ires,ires-ishift+ishift1,
+!     &      " ires_old",ires_old
+!          write (iout,*) "ishift",ishift," ishift1",ishift1
+!          write (iout,*) "IRES",ires-ishift+ishift1,ires_old
           if (ires-ishift+ishift1.ne.ires_old) then
-C Calculate the CM of the preceding residue.
-c            if (ibeg.eq.0) call sccenter(ires,iii,sccor)
+! Calculate the CM of the preceding residue.
+!            if (ibeg.eq.0) call sccenter(ires,iii,sccor)
             if (ibeg.eq.0) then
-c              write (iout,*) "Calculating sidechain center iii",iii
+!              write (iout,*) "Calculating sidechain center iii",iii
               if (unres_pdb) then
                 do j=1,3
-                  dc(j,ires)=sccor(j,iii)
+                  dc(j,ires+nres)=sccor(j,iii)
                 enddo
               else
                 call sccenter(ires_old,iii,sccor)
               endif
               iii=0
             endif
-C Start new residue.
+! Start new residue.
             if (res.eq.'Cl-' .or. res.eq.'Na+') then
               ires=ires_old
               cycle
@@ -93,9 +114,17 @@ c              write (iout,*) "BEG ires",ires
               endif
               ires=ires-ishift+ishift1
               ires_old=ires
-c              write (iout,*) "ishift",ishift," ires",ires,
-c     &         " ires_old",ires_old
-              ibeg=0          
+!              write (iout,*) "ishift",ishift," ires",ires,&
+!               " ires_old",ires_old
+              ibeg=0 
+            else if (ibeg.eq.2) then
+! Start a new chain
+              ishift=-ires_old+ires-1 !!!!!
+              ishift1=ishift1-1    !!!!!
+!              write (iout,*) "New chain started",ires,ishift,ishift1,"!"
+              ires=ires-ishift+ishift1
+              ires_old=ires
+              ibeg=0
             else
               ishift=ishift-(ires-ishift+ishift1-ires_old-1)
               ires=ires-ishift+ishift1
@@ -109,15 +138,15 @@ c     &         " ires_old",ires_old
           else
             ires=ires-ishift+ishift1
           endif
-c          write (iout,*) "ires_old",ires_old," ires",ires
+!          write (iout,*) "ires_old",ires_old," ires",ires
           if (card(27:27).eq."A" .or. card(27:27).eq."B") then
-c            ishift1=ishift1+1
+!            ishift1=ishift1+1
           endif
-c          write (2,*) "ires",ires," res ",res," ity",ity
+!          write (2,*) "ires",ires," res ",res!," ity"!,ity 
           if (atom.eq.'CA' .or. atom.eq.'CH3' .or. 
      &       res.eq.'NHE'.and.atom(:2).eq.'HN') then
             read(card(31:54),'(3f8.3)') (c(j,ires),j=1,3)
-c            write (iout,*) "backbone ",atom 
+!            write (iout,*) "backbone ",atom
 #ifdef DEBUG
             write (iout,'(2i3,2x,a,3f8.3)') 
      &      ires,itype(ires),res,(c(j,ires),j=1,3)
@@ -126,19 +155,15 @@ c            write (iout,*) "backbone ",atom
             do j=1,3
               sccor(j,iii)=c(j,ires)
             enddo
-            if (ishift.ne.0) then
-              ires_ca=ires+ishift-ishift1
-            else
-              ires_ca=ires
-            endif
-c            write (*,*) card(23:27),ires,itype(ires)
-          else if (atom.ne.'O'.and.atom(1:1).ne.'H' .and.
-     &             atom.ne.'N' .and. atom.ne.'C' .and.
-     &             atom(:2).ne.'1H' .and. atom(:2).ne.'2H' .and.
+c            write (2,*) card(23:27),ires,itype(ires),iii
+          else if (atom.ne.'O'.and.atom(1:1).ne.'H' .and. 
+     &             atom.ne.'N' .and. atom.ne.'C' .and. 
+     &             atom(:2).ne.'1H' .and. atom(:2).ne.'2H' .and. 
      &             atom.ne.'OXT' .and. atom(:2).ne.'3H') then
-c            write (iout,*) "sidechain ",atom
+!            write (iout,*) "sidechain ",atom
             iii=iii+1
             read(card(31:54),'(3f8.3)') (sccor(j,iii),j=1,3)
+c            write (2,*) "iii",iii
           endif
         endif
       enddo
@@ -474,22 +499,36 @@ c---------------------------------------------------------------------------
       end
 c---------------------------------------------------------------------------
       subroutine bond_regular
-      implicit real*8 (a-h,o-z)
-      include 'DIMENSIONS'   
+      implicit none
+      include 'DIMENSIONS'
       include 'COMMON.VAR'
-      include 'COMMON.LOCAL'      
-      include 'COMMON.CALC'
+      include 'COMMON.LOCAL'
       include 'COMMON.INTERACT'
       include 'COMMON.CHAIN'
+      integer i,i1,i2
       do i=1,nres-1
        vbld(i+1)=vbl
-       vbld_inv(i+1)=1.0d0/vbld(i+1)
-       vbld(i+1+nres)=dsc(itype(i+1))
-       vbld_inv(i+1+nres)=dsc_inv(itype(i+1))
+       vbld_inv(i+1)=vblinv
+       vbld(i+1+nres)=dsc(iabs(itype(i+1)))
+       vbld_inv(i+1+nres)=dsc_inv(iabs(itype(i+1)))
 c       print *,vbld(i+1),vbld(i+1+nres)
       enddo
+c Adam 2/26/20 Alter virtual bonds for non-blocking end groups of each chain
+      do i=1,nchain
+        i1=chain_border(1,i)
+        i2=chain_border(2,i)
+        if (i1.gt.1) then
+          vbld(i1)=vbld(i1)/2
+          vbld_inv(i1)=vbld_inv(i1)*2
+        endif
+        if (i2.lt.nres) then
+          vbld(i2+1)=vbld(i2+1)/2
+          vbld_inv(i2+1)=vbld_inv(i2+1)*2
+        endif
+      enddo
       return
       end
+c---------------------------------------------------------------------------
       subroutine readpdb_template(k)
 C Read the PDB file with gaps for read_constr_homology with read2sigma
 C and convert the peptide geometry into virtual-chain geometry.