Atom Nomenclature for NMS

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 NMS

Atom Name (V3) Atom Name (V2)
P P
OP2 O2P
OP1 O1P
O5' O5*
N1 N1
C6 C6
C2 C2
O2 O2
N3 N3
C4 C4
O4 O4
C5 C5
C5M C5M
C2' C2*
C5' C5*
C4' C4*
O4' O4*
C1' C1*
C3' C3*
O3' O3*
O6' O6'
C7' C7'
C8' C8'
O8' O8'
N9' N9'
C10 C10
OP3 O3P
HOP2 2HOP
H6 H6
HN3 HN3
H71 1H5M
H72 2H5M
H73 3H5M
H2' H2*
H5' 1H5*
H5'' 2H5*
H4' H4*
H1' H1*
H3' H3*
HO3' H3T
H7'1 1H7'
H7'2 2H7'
H9' H9'
H101 1H10
H102 2H10
H103 3H10
HOP3 3HOP