Jack Shultz wrote:
I tried to protonate my pdb file using openbabel
babel -ipdb fzd8min_renum_SS.pdb -opdb Protein.pdb -h

Then I ran pdb2gmx with the following

pdb2gmx -ff amber99sb -f ProteinAmber.pdb -o Protein2.pdb -p
Protein.top -water spce -ignh

But apparently I am missing a H from my first residue. Is there an
easy way to add missing atoms?

WARNING: atom H is missing in residue GLU 1 in the pdb file
         You might need to add atom H to the hydrogen database of residue GLU
         in the file ff???.hdb (see the manual)



When using AMBER, the first residue should be NGLU, not just GLU. Likewise for the C-terminus (CXXX). If you name the residue appropriately, the right hydrogens should be added based on the .hdb entry.

-Justin

-------------------------------------------------------
Program pdb2gmx, VERSION 4.0.5
Source code file: pdb2top.c, line: 704

Fatal error:
There were 1 missing atoms in molecule Protein, if you want to use
this incomplete topology anyhow, use the option -missing
-------------------------------------------------------


--
========================================

Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin

========================================
--
gmx-users mailing list    [email protected]
http://lists.gromacs.org/mailman/listinfo/gmx-users
Please search the archive at http://www.gromacs.org/search before posting!
Please don't post (un)subscribe requests to the list. Use the www interface or send it to [email protected].
Can't post? Read http://www.gromacs.org/mailing_lists/users.php

Reply via email to