Atom Nomenclature for GPS

The atom nomenclature in PDB data files was revised with the release of data in the PDB Format Version 3.0. These changes make the PDB atom names used by PDB compliant with existing IUPAC nomenclature for standard amino acid and nucleotides (Pure & Appl. Chem., 70, 117-142, 1998) with the exception of the well established convention for C-terminal atoms OXT and HXT. A small number of additional changes were introduced in Version 3 to make atom labeling more conventional. The following chemical diagrams and tables provide the correspondences between atom names used in Version 3 and Version 2 PDB formats.

Labeled Chemical Diagrams

Chemical diagram with format V3 atom labels (heavy atoms)
Chemical diagram with format V3 atom labels (all atoms)
Chemical diagram with format V2 atom labels (heavy atoms)
Chemical diagram with format V2 atom labels (all atoms)

Atom Name Correspondences for GPS

Atom Name (V3) Atom Name (V2)
C1 C1
N1 N1
C2 C2
N2 N2
O2 O2
C3 C3
N3 N3
O5 O5
O11 O11
O12 O12
O31 O31
O32 O32
CA1 CA1
CA2 CA2
CA3 CA3
CA4 CA4
CA5 CA5
CB1 CB1
CB2 CB2
CB4 CB4
CB5 CB5
CD1 CD1
CD4 CD4
CD5 CD5
OE1 OE1
CE4 CE4
CE5 CE5
CG1 CG1
SG2 SG2
CG4 CG4
CG5 CG5
CH4 CH4
CH5 CH5
CZ4 CZ4
CZ5 CZ5
HN1 HN1
HN1A HN1A
HN2 HN2
HN3 HN3
HO5 HO5
HO12 HO12
HO32 HO32
HA1 HA1
HA2 HA2
HA3 HA3
HA3A HA3A
HA4 HA4
HA5 HA5
HB1 HB1
HB1A HB1A
HB2 HB2
HB2A HB2A
HD4 HD4
HD5 HD5
HE4 HE4
HE5 HE5
HG1 HG1
HG1A HG1A
HG4 HG4
HG5 HG5
HZ4 HZ4
HZ5 HZ5