Atom Nomenclature for AP9

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 AP9

Atom Name (V3) Atom Name (V2)
O1 O1
C15 C15
C12 C12
C13 C13
C14 C14
C16 C16
N2 N2
C2 C2
N3 N3
C4 C4
C5 C5
N7 N7
C8 C8
N9 N9
C9 C9
C10 C10
C11 C11
C6 C6
N1 N1
N6 N6
C1A C1A
C2A C2A
C3A C3A
N10 N10
C4A C4A
C5A C5A
CL1 CL1
C6A C6A
HO1 HO1
H151 1H15
H152 2H15
H12 H12
H13 H13
H141 1H14
H142 2H14
H143 3H14
H161 1H16
H162 2H16
H163 3H16
HN2 HN2
H8 H8
H9 H9
H101 1H10
H102 2H10
H103 3H10
H111 1H11
H112 2H11
H113 3H11
HN6 HN6
H2A H2A
H11 1H1
H12A 2H1
H4A H4A
H6A H6A