Atom Nomenclature for BNI

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 BNI

Atom Name (V3) Atom Name (V2)
C1 C1
C10 C10
C9 C9
C8 C8
C7 C7
C2 C2
C6 C6
C4 C4
C5 C5
C3 C3
O2 O2
O3 O3
N1 N1
N2 N2
S1 S1
N17 N17
C18 C18
C20 C20
C21 C21
C22 C22
C23 C23
C24 C24
N25 N25
O26 O26
O27 O27
H101 1H10
H102 2H10
H91 1H9
H92 2H9
H81 1H8
H82 2H8
H71 1H7
H72 2H7
H21A 1H2
H61 1H6
H62 2H6
HC4 HC4
HC5 HC5
HN11 1HN1
HN21 1HN2
H171 1H17
H20 H20
H21 H21
H23 H23
H24 H24