Atom Nomenclature for AM2

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 AM2

Atom Name (V3) Atom Name (V2)
CA1 CA1
CA2 CA2
CA3 CA3
CA4 CA4
CA5 CA5
CA6 CA6
CA7 CA7
CA8 CA8
CA9 CA9
OA4 OA4
OA5 OA5
NA2 NA2
NA7 NA7
OA6 OA6
OA8 OA8
OA1 OA1
CB1 CB1
CB2 CB2
CB3 CB3
CB4 CB4
CB5 CB5
CB6 CB6
OB1 OB1
NB4 NB4
OB2 OB2
OB3 OB3
OB6 OB6
CC1 CC1
CC2 CC2
CC3 CC3
CC4 CC4
CC5 CC5
CC6 CC6
NC4 NC4
NC6 NC6
OC2 OC2
OC3 OC3
HA1 HA1
HA2 HA2
HA31 1HA3
HA32 2HA3
HA4 HA4
HA5 HA5
HA6 HA6
HA7 HA7
HA8 HA8
HA91 1HA9
HA92 2HA9
HA93 3HA9
HA21 1HA2
HA22 2HA2
H2 H2
H1 H1
HB1 HB1
HB2 HB2
HB3 HB3
HB4 HB4
HB5 HB5
HB61 1HB6
HB62 2HB6
HB41 1HB4
HB42 2HB4
H5 H5
H6 H6
HB6 HB6
HC1 HC1
HC2 HC2
HC3 HC3
HC4 HC4
HC51 1HC5
HC52 2HC5
HC6 HC6
HC41 1HC4
HC42 2HC4
HC61 1HC6
HC62 2HC6
H3 H3
H4 H4