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<pre>"""<br>This depends entirely upon what your goal is. Your original question implied
you wished to build a system of multiple, identical peptides, pertaining to:
<a href="http://www.gromacs.org/Documentation/How-tos/Multiple_Chains#Identical_chains">http://www.gromacs.org/Documentation/How-tos/Multiple_Chains#Identical_chains</a>
Now you want a multimeric protein for which there are multiple, potentially
different peptide, i.e.:
<a href="http://www.gromacs.org/Documentation/How-tos/Multiple_Chains#Non-identical_chains">http://www.gromacs.org/Documentation/How-tos/Multiple_Chains#Non-identical_chains</a>
The approaches are completely different, as the documentation should make quite
clear. Simply "having multiple chains" is a very vague statement. Perhaps if
you clearly stated your goal for the simulation I (or someone else) could help
you better.
As for the PDB site, there are probably thousands of proteins in line with what
you want. Any heteromultimeric protein would do (assuming, of course, the
latter case of non-identical chains).
-Justin<br>"""<br><br><br>Sorry I wasn't clear. Basically I want to have a simulation box with as many of the same polypeptide as I can cram in, essentially a simulation of the polypeptide melted.<br>I would like to see how the polypeptides interact with each other with the ultimate goal of simulating block copolymers. Since I'm new with Gromacs, I'm just trying<br>to figure out how to run simulations with multiple chains where all chains are the same type.<br><br>Justin, you've been very helpful so far and I appreciate it. <br></pre> </body>
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