[Chimera-users] No MMTK name for atom "HD2" in standard residue ASN

Sina Analoui sanaloui at bu.edu
Wed Mar 31 09:19:34 PDT 2021

Hi All,

I am currently attempting to minimize a large molecule (ACE2 alongside the
RBM of a spike protein). I Dock Prep both chains (A chain is ACE2) and then
go on to attempt to minimize them. However, I keep returning this error "No
MMTK name for atom "HD2" in standard residue ASN" I have attempted to
remedy this by rewriting parts of the PDB file and importing it back in and
have had no success. Is there any way to either remove NAG that is
associated with these residues or change this hydrogen to something
feasible? This seems to be an issue for only the ASNs on the A chain and
not elsewhere on the molecule

Thank you in advance for your help
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