I suggest this tool:https://github.com/llazzaro/acpype
On Friday, September 14, 2018, 10:44:56 PM GMT+3, SAKO MIRZAIE <sako.bioc...@gmail.com> wrote: Hi every one, I need the topology parameters for pyridoxal phosphate linked to lysine with amber99sb force field. does anyone have the mentioned parameters? I searched it among publications but I didn't find it at all. Best regards, -- *********************************************** Sako Mirzaie Ph.D. in biochemistry, Assistant Professor, Science Faculty, Islamic Azad University of Sanandaj, Sanandaj, Iran http://www.iausdj.ac.ir/_Academician?username=sakomirzaie http://www.iausdj.ac.ir/_Academician/English?username=sakomirzaie http://scholar.google.com/citations?user=viwZvVAAAAAJ&hl=en http://www.scopus.com/authid/detail.url?authorId=54886431500 http://www.ncbi.nlm.nih.gov/pubmed/?term=sako+mirzaie https://www.researchgate.net/profile/Sako_Mirzaie/publications/ -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org. -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.