Atom Nomenclature for BAF

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 BAF

Atom Name (V3) Atom Name (V2)
N3 N3
C1 C1
O1 O1
CA1 CA1
CB1 CB1
N1 N1
C2 C2
O2 O2
CA2 CA2
CB2 CB2
N2 N2
C3 C3
O3 O3
O4 O4
C4 C4
C41 C41
C42 C42
C43 C43
HN3 HN3
H1 H1
HA1 HA1
HB11 1HB1
HB12 2HB1
HB13 3HB1
HN1 HN1
HA2 HA2
HB21 1HB2
HB22 2HB2
HB23 3HB2
HN2 HN2
H411 1H41
H412 2H41
H413 3H41
H421 1H42
H422 2H42
H423 3H42
H431 1H43
H432 2H43
H433 3H43