Atom Nomenclature for 653

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 653

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
C7 C7
N1 N1
N2 N2
N3 N3
N4 N4
C8 C8
C1' C1'
C2' C2'
C3' C3'
CV' C31'
CW' C32'
NX' N33'
C4' C4'
C5' C5'
C6' C6'
O6' O6'
C1B C1''
C2B C2''
C3B C3''
C4B C4''
C5B C5''
C6B C6''
HC2 HC2
HC3 HC3
HC6 HC6
HH11 HH11
HH12 HH12
HH21 HH21
HH22 HH22
HN3 HN3
HC2' HC2'
H31A H31A
H31B H31B
H32A H32A
H32B H32B
H33A H33A
H33B H33B
H33C H33C
HC4' HC4'
H2B H2''
H3B H3''
H4B H4''
H5B H5''
H6B H6''