<div class="gmail_quote"><br><br>Dear CP2K users,<br><br>I am performing MD simulation using cp2k. I have a question regarding input file preparation. I am reading coordinates from PDB file and using amber force field. I would like water to be rigid during simulation. What will be the suitable keyword in MOLNAME option, it will be great help for me. Because in PDB file there is no MOL keyword.<br>
<br> &CONSTRAINT<br> &G3X3<br> EXCLUDE_QM<br> DISTANCES 1.8896447 1.8896447 3.0862864<br> MOLNAME ????<br> ATOMS 1 2 3<br> &END G3X3<br> &END<br><br>PDB file of WATER looks like:<br>
<br>ATOM 32914 H1 WAT 9851 -37.475 -29.571 -27.585 1.00 0.00<br>ATOM 32915 H2 WAT 9851 -37.251 -29.868 -26.118 1.00 0.00<br>ATOM 32916 O WAT 9851 -37.763 -29.316 -26.708 1.00 0.00<br>TER<br>
ATOM 32917 H1 WAT 9852 -36.769 -28.630 -19.298 1.00 0.00<br>ATOM 32918 H2 WAT 9852 -37.711 -27.567 -19.823 1.00 0.00<br>ATOM 32919 O WAT 9852 -37.696 -28.394 -19.341 1.00 0.00<br><br>Have a nice day,<br>
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Thanks,<br><font color="#888888">
Maiti<br>
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