Atom Nomenclature for AS1

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 AS1

Atom Name (V3) Atom Name (V2)
O51 O51
O52 O52
C5 C5
C4 C4
N4 N4
C3 C3
C2 C2
C1 C1
N2 N2
C C
N3 N3
N1 N1
CA CA
CG CG
OG2 OG2
OG1 OG1
CB CB
CD CD
OD1 OD1
OD2 OD2
HO HO
H4 H4
HN41 1HN4
HN42 2HN4
H31 1H3
H32 2H3
H21 1H2
H22 2H2
H11 1H1
H12 2H1
HN2 HN2
HN3 HN3
HN1 HN1
HA HA
HO1 HO1
HB1 1HB
HB2 2HB
HO2 HO2