Atom Nomenclature for AAI

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 AAI

Atom Name (V3) Atom Name (V2)
C1 C1
N2 N2
C3 C3
C4 C4
N5 N5
C6 C6
C7 C7
C8 C8
C9 C9
C10 C10
N11 N11
O12 O12
C13 C13
C14 C14
C15 C15
N16 N16
C17 C17
C18 C18
C19 C19
C20 C20
C21 C21
H2 H2
H7 H7
H8 H8
H9 H9
H111 H111
H112 H112
H13 H13
H141 H141
H142 H142
H151 H151
H152 H152
H171 H171
H172 H172
H181 H181
H182 H182
H191 H191
H192 H192
H201 H201
H202 H202
H211 H211
H212 H212
H213 H213