Atom Nomenclature for CAF

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 CAF

Atom Name (V3) Atom Name (V2)
N N
CA CA
CB CB
C C
O O
OXT OXT
SG SG
AS AS
CE1 CE1
CE2 CE2
O1 O1
H HN1
H2 HN2
HA HA
HB2 HB1
HB3 HB2
HXT HXT
HE11 HE11
HE12 HE12
HE13 HE13
HE21 HE21
HE22 HE22
HE23 HE23