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<br>Hi<br>I am trying to add conect records to a cg trajectory under gromacs 4.5.4 as follows:<br>trjconv -s CONECT.PDB -f traj.xtc -conect -o testconect.pdb<br><br>or with one frame<br><br>trjconv -s CONECT.PDB -f oneframe.pdb -conect -o testconect.pdb<br><br>but dont see any conect records in the output file.<br><br>The conect records are in the input to -s , conect.pdb and in the following format:<br>...<br>ATOM 4125 CA HIS X 173 107.816 143.564 71.946 1.00 0<br>ATOM 4126 CA THR X 174 110.288 142.372 69.327 1.00 0<br>ATOM 4127 CA LEU X 175 111.958 139.227 70.607 1.00 0<br>ATOM 4128 CA GLY X 176 108.771 138.107 72.357 1.00 0<br>CONECT 1 2<br>CONECT 2 3<br>CONECT 3 4<br>CONECT 4 5<br>CONECT 5 6<br>CONECT 6 7<br>CONECT 7 8<br>CONECT 8 9<br>CONECT 9 10<br>CONECT 10 11<br>CONECT 11 12<br>CONECT 12 13<br>CONECT 13 14<br>CONECT 14 15<br>CONECT 15 16<br>CONECT 16 17<br>CONECT 17 18<br>CONECT 18 19<br>CONECT 19 20<br>CONECT 20 21<br>CONECT 21 22<br>...<br><br>What should I do differently to get the conect records in the output file?<br><br><br>Thanks in advance.<br>Vijaya<br>                                            </div></body>
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