Atom Nomenclature for 2AS

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 2AS

Atom Name (V3) Atom Name (V2)
C C
O O
CA CA
N N
CB CB
CG CG
OD1 OD1
C4 C4
OD2 OD2
OXT OXT
HA HA
H H
H2 H2
HB2 HB2
H4 H4
H4A H4A
H4B H4B
HD2 HD2
HXT HXT