how to resolve NAMD softaware error-" FATAL ERROR: DIDN'T FIND vdW PARAMETER FOR ATOM TYPE OT?
you can check the following links:
https://www.ks.uiuc.edu/Research/namd/mailing_list/namd-l.2012-2013/3505.html
https://www.ks.uiuc.edu/Research/namd/mailing_list/namd-l.2012-2013/3512.html
Presumably, the .psf file didn't have the parameters for OT atom type.
Please check the topology .rtf files as well as the parameter .prm files to look into the atom details.
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