Atom Nomenclature for GDS

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 GDS

Atom Name (V3) Atom Name (V2)
N1 N1
CA1 CA1
C1 C1
OE1 OE1
OE2 OE2
CB1 CB1
CG1 CG1
CD1 CD1
O1 O1
N2 N2
CA2 CA2
C2 C2
O2 O2
CB2 CB2
SG2 SG2
N3 N3
CA3 CA3
C3 C3
OE3 OE3
OE4 OE4
N4 N4
CA4 CA4
C4 C4
OE5 OE5
OE6 OE6
C5 C5
O5 O5
CA5 CA5
N5 N5
CB5 CB5
SG5 SG5
CA6 CA6
C6 C6
OE7 OE7
OE8 OE8
N6 N6
CB6 CB6
CG6 CG6
CD6 CD6
O6 O6
HN11 1HN1
HN12 2HN1
HA1 HA1
HO2 HO2
HB11 1HB1
HB12 2HB1
HG11 1HG1
HG12 2HG1
HN2 HN2
HA2 HA2
HB21 1HB2
HB22 2HB2
HN3 HN3
HA31 1HA3
HA32 2HA3
HO4 HO4
HN4 HN4
HA41 1HA4
HA42 2HA4
HO6 HO6
HA5 HA5
HN5 HN5
HB51 1HB5
HB52 2HB5
HA6 HA6
HO8 HO8
HN61 1HN6
HN62 2HN6
HB61 1HB6
HB62 2HB6
HG61 1HG6
HG62 2HG6