Atom Nomenclature for B2L

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 B2L

Atom Name (V3) Atom Name (V2)
C1 C1
O2 O2
C3 C3
C4 C4
C5 C5
C6 C6
C7 C7
C8 C8
C9 C9
C10 C10
C11 C11
C12 C12
C13 C13
C14 C14
N15 N15
C16 C16
C17 C17
C18 C18
N19 N19
C20 C20
N21 N21
H1 H1
H1A H1A
H3 H3
H3A H3A
H5 H5
H6 H6
H7 H7
H11 H11
H12 H12
H16 H16
H18 H18
H18A H18A
H18B H18B
HN21 HN21
HN2A HN2A