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<DIV>Dear Gromacs users, <BR> <BR>I am trying to build a topology file
for a DNA model using pdb2gmx -f file.pdb -p file.top -o file.gro.</DIV>
<DIV>I used OPLS force field and got the following error, any
ideas? <BR>Sorting it all out...<BR>Opening library file
/space/gromacs/share/top/ffoplsaa.hdb<BR>Opening library file
/space/gromacs/share/top/ffoplsaa-n.tdb<BR>Opening library file
/space/gromacs/share/top/ffoplsaa-c.tdb<BR>Processing chain 1 (438 atoms, 20
residues)<BR>Opening library file /space/gromacs/share/top/specbond.dat<BR>5 out
of 5 lines of specbond.dat converted succesfully<BR>There are 0 donors and 0
acceptors<BR>There are 0 hydrogen bonds<BR>Fatal error: Residue 'A5' not found
in residue topology database<BR></DIV>
<DIV> </DIV>
<DIV>Thanks</DIV>
<DIV> </DIV>
<DIV>Hailong</DIV></BODY></HTML>