Atom Nomenclature for PLM

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 PLM

Atom Name (V3) Atom Name (V2)
C1 C1
O1 O1
O2 O2
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
C7 C7
C8 C8
C9 C9
CA CA
CB CB
CC CC
CD CD
CE CE
CF CF
CG CG
H H
H21 1H2
H22 2H2
H31 1H3
H32 2H3
H41 1H4
H42 2H4
H51 1H5
H52 2H5
H61 1H6
H62 2H6
H71 1H7
H72 2H7
H81 1H8
H82 2H8
H91 1H9
H92 2H9
HA1 1HA
HA2 2HA
HB1 1HB
HB2 2HB
HC1 1HC
HC2 2HC
HD1 1HD
HD2 2HD
HE1 1HE
HE2 2HE
HF1 1HF
HF2 2HF
HG1 1HG
HG2 2HG
HG3 3HG