"N": 1,
"H": 1,
"HN": 1,
"H1": 1,
"H2": 1,
"H3": 1,
"CA": 1,
"HA": 1,
"HA1": 1,
"HA2": 1,
"HA3": 1,
}
backBoneNucleicAtomDict = {"P": 1, "O3'": 1, "C3'": 1, "C4'": 1, "C5'": 1, "O5'": 1} # skipping 'backbone protons'
NterminalProteinAtomDict = NTdict()
NterminalProteinAtomDict.appendFromList("H1 H2 H3 H' H''".split()) # watch out; H1 does occur in nucleic acid bases.
NterminalNucleicAtomDict = NTdict()
NterminalNucleicAtomDict.appendFromList("HOP2 HOP3".split())
def isNterminalAtom(atmDef):
"""
Return True if atom belongs to N-terminal category.
Needs to be called by valid atmDef or 0 will be returned.
"""
if atmDef is None or atmDef.residueDef is None: # Fixes 2ksi
# nTdebug("%s called without atom/residue definition." % getCallerName())
return 0
if atmDef.residueDef.hasProperties("protein"):
d = NterminalProteinAtomDict
