Atom Nomenclature for SR2

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 SR2

Atom Name (V3) Atom Name (V2)
C4 C4
C3 C3
BRR1 BRR1
C22 C22
C21 C21
C20 C20
C5 C5
N1 N1
C6 C6
C7 C7
C8 C8
N3 N3
C19 C19
N2 N2
C18 C18
C17 C17
C13 C13
C9 C9
N11 N11
C10 C10
O61 O61
C11 C11
C51 C51
C61 C61
N63 N63
C65 C65
C67 C67
H4 H4
H22 H22
H21 H21
H20 H20
HN1 HN1
H8 H8
H19 H19
H17 H17
H13 H13
HN11 HN11
H111 1H11
H511 1H51
H611 1H61
H612 2H61
H651 1H65
H652 2H65
H653 3H65
H671 1H67
H672 2H67
H673 3H67