Atom Nomenclature for AN2

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 AN2

Atom Name (V3) Atom Name (V2)
N3B N3B
PB PB
O2B O2B
O1B O1B
O3A O3A
PA PA
O1A O1A
O2A O2A
O5' O5*
C5' C5*
C4' C4*
O4' O4*
C3' C3*
O3' O3*
C2' C2*
O2' O2*
C1' C1*
N9 N9
C8 C8
N7 N7
C5 C5
C4 C4
N3 N3
C2 C2
N1 N1
C6 C6
N6 N6
H3B1 1H3B
H3B2 2H3B
HO2B BHO2
HO2A AHO2
H5'1 1H5*
H5'2 2H5*
H4' H4*
H3' H3*
HA HA
H2' H2*
HB HB
H1' H1*
H8 H8
H2 H2
H6N1 1H6N
H6N2 2H6N