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First off I am using gromacs 4.5. I will also post all of my files and errors if they help.
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<p style="margin: 0px;">If I run a protein in GROMOS96 all my md runs complete succesfully. But if I change to any of the AMBER force fields I get LINCS errors in my positional restraint md run. I have tried using shake, 1 fs step sizes, -heavyh, and many more. Does anyone know what is going on here?</p>
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<p style="margin: 0px;">The reason I want to use AMBER is the fact that I want to run md on the 30s rybosome and amber converts RNA much easier than GROMOS force fields.</p>
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<p style="margin: 0px;">Thank you in advance,</p>
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<p style="font-family: monospace; white-space: nowrap; margin: 5px 0px;">TJ Mustard Email: mustardt@onid.orst.edu<br />
Cell: 509-879-4173</p>
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