Dear Justin, Thank you very much for quick response.
I want to capitalize cn9, but I could not find small cn9 in my force field. There is CN9 (capital) only for DNA. There is not any DNA molecules in my system. Best regards, Mijiddorj > > On 1/15/17 11:04 PM, Mijiddorj Batsaikhan wrote: > > Dear gmx users, > > > > I am using gromacs-v5.1 with charmm27 force field that extended by > > swissparams D amino acids. > > > > I got a following error. > > > > ************************************* > > Fatal error: > > Unknown bond_atomtype cn9 > > ************************************* > > I searched some solutions, but there is no clear solution. > > I also checked in atomtype.atp, etc., I could not find cn9, There are all > > CN9. > > > > How can I fix this error? please advice me for modification of FF. > > > > Capitalize it. GROMACS atom types are case-sensitive. > > -Justin > > -- > ================================================== > > Justin A. Lemkul, Ph.D. > Ruth L. Kirschstein NRSA Postdoctoral Fellow > > Department of Pharmaceutical Sciences > School of Pharmacy > Health Sciences Facility II, Room 629 > University of Maryland, Baltimore > 20 Penn St. > Baltimore, MD 21201 > > jalem...@outerbanks.umaryland.edu | (410) 706-7441 > http://mackerell.umaryland.edu/~jalemkul > > ================================================== > -- 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.
