In modeller this data is stored as name, I guess that you know better the reasons for that - so the conversion is:2. The atom type could be argued to really be 'name', since, forexample, AT_CG1 and AT_CG2 are both carbon, and this is orthogonal fromthe CHARMM forcefield type (probably CT2 or CT3).
ap.set_type(IMP.AtomType(a.name))We should just use what ever is the convention - which I thought was name, but if not than we can leave it as it is.