Atom Nomenclature for LCS

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 LCS

Atom Name (V3) Atom Name (V2)
N1 N1
C2 C2
C2A C2A
C3 C3
O3 O3
C4 C4
C4A C4A
C5 C5
C6 C6
C5A C5A
O4P O4P
P P
O1P O1P
O2P O2P
O3P O3P
N N
CA CA
C C
O O
ND ND
OG OG
CB CB
H2A1 H2A1
H2A2 H2A2
H2A3 H2A3
HO3 HO3
H4A1 H4A1
H4A2 H4A2
H6 H6
H5A1 H5A1
H5A2 H5A2
HOP2 HOP2
HOP3 HOP3
HND HND
HB1 HB1
HB2 HB2