Atom Nomenclature for PFG

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 PFG

Atom Name (V3) Atom Name (V2)
N1 N1
C2 C2
NA2 NA2
N3 N3
C4 C4
O4 O4
C4A C4A
C5 C5
C6 C6
C7 C7
C8 C8
C8A C8A
C9 C9
N10 N10
CP1 CP1
CP2 CP2
CP3 CP3
C11 C11
C12 C12
C13 C13
C14 C14
C15 C15
C16 C16
C C
O O
NP1 NP1
CA1 CA1
CB1 CB1
CG1 CG1
CD1 CD1
OE1 OE1
CT1 CT1
O11 O11
O21 O21
NP2 NP2
CA2 CA2
CB2 CB2
CG2 CG2
CD2 CD2
OE2 OE2
CT2 CT2
O12 O12
O22 O22
NP3 NP3
CA3 CA3
CB3 CB3
CG3 CG3
CD3 CD3
OE3 OE3
CT3 CT3
O13 O13
O23 O23
NP4 NP4
CA4 CA4
CB4 CB4
CG4 CG4
CD4 CD4
OE4 OE4
OE OE
CT4 CT4
O14 O14
O24 O24
HN1 HN1
HN21 1HN2
HN22 2HN2
H5 H5
H7 H7
H8 H8
H91 1H9
H92 2H9
HP11 1HP1
HP12 2HP1
HP3 HP3
H12 H12
H13 H13
H15 H15
H16 H16
HNP1 1HNP
HA1 HA1
HB11 1HB1
HB12 2HB1
HG11 1HG1
HG12 2HG1
HO21 1HO2
HNP2 2HNP
HA2 HA2
HB21 1HB2
HB22 2HB2
HG21 1HG2
HG22 2HG2
HO22 2HO2
HNP3 3HNP
HA3 HA3
HB31 1HB3
HB32 2HB3
HG31 1HG3
HG32 2HG3
HO23 3HO2
HNP4 4HNP
HA4 HA4
HB41 1HB4
HB42 2HB4
HG41 1HG4
HG42 2HG4
HOE HOE
HO24 4HO2