Atom Nomenclature for DA2

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 DA2

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
N N
CA CA
CB CB
CG CG
CD CD
NE NE
CZ CZ
NH2 NH2
NH1 NH1
C C
O O
OXT OXT
HC11 HC11
HC12 HC12
HC13 HC13
HC21 HC21
HC22 HC22
HC23 HC23
H HN1
H2 HN2
HA HCA
HCB1 HCB1
HCB2 HCB2
HCG1 HCG1
HCG2 HCG2
HCD1 HCD1
HCD2 HCD2
HNE HNE
HNH2 HNH2
HXT HXT