It looks like the problems I'm seeing with 4E8M now are due to PDB2PQR incorrectly reconstructing missing atoms:
REMARK 470 M RES CSSEQI ATOMS
REMARK 470 G A -1 OP2 N9 C8 N7 C5 C6 O6
REMARK 470 G A -1 N1 C2 N2 N3 C4
REMARK 470 G A 1 N9 C8 N7 C5 C6 O6 N1
REMARK 470 G A 1 C2 N2 N3 C4
REMARK 470 A A 207 N9 C8 N7 C5 C6 N6 N1
REMARK 470 A A 207 C2 N3 C4
REMARK 470 G A 311 N9 C8 N7 C5 C6 O6 N1
REMARK 470 G A 311 C2 N2 N3 C4
REMARK 470 C A 312 N1 C2 O2 N3 C4 N4 C5
REMARK 470 C A 312 C6
REMARK 470 G A 391 N9 C8 N7 C5 C6 O6 N1
REMARK 470 G A 391 C2 N2 N3 C4
It looks like the problems I'm seeing with 4E8M now are due to PDB2PQR incorrectly reconstructing missing atoms:
Originally posted by @sobolevnrm in https://github.com/Electrostatics/pdb2pqr/issues/256#issuecomment-1003118601