Dear all,
we'd need to convert a trajectory in .xtc format (and the related topology file) to a format that could be read by Amber program (I'd need to perform MM-PBSA calculations). We tried to do it using VMD, but failed to produce a correct trajectory to be read by MMPBSA.py tool. It complains about the fact that it expected only 3 or 6 box coords, but I ran the trajectory using a rhombic dodecahedric box, with 9 box coords. I read the gmx-user archive to find hints to overcome the problem, but only found incomplete, and in some cases quite old, suggestions (We are currently using Gromacs 4.5.4 version). I don't see anywhere a detailed suggestion on how to proceed, and I have even the doubt that this is not possible to do. Could you please give me some information about, possibly with detailed descriptions about the commands and the flags to use?

Many thanks in advance for your kind answer and best regards
Anna

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______________________________________________
Anna Marabotti, Ph.D.
Assistant Professor
Department of Chemistry and Biology
University of Salerno
Via Ponte don Melillo
84084 Fisciano (SA)
Italy
Phone: +39 089 969583
Fax: +39 089 969603
E-mail: amarabo...@unisa.it
Skype: annam1972

"When a man with a gun meets a man with a pen, the man with the gun is a dead 
man"
(Roberto Benigni, about Roberto Saviano)

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