Atom Nomenclature for UPC

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 UPC

Atom Name (V3) Atom Name (V2)
N1 N1
C2 C2
O2 O2
N3 N3
C4 C4
O4 O4
C5 C5
C6 C6
PA PA
PB PB
PG PG
C1' C1'
O1A O1A
O1B O1B
O1G O1G
C2' C2'
O2A O2A
O2B O2B
O2G O2G
C3' C3'
O3' O3'
C3A C3A
O3B O3B
O3G O3G
C4' C4'
O4' O4'
C5' C5'
O5' O5'
H5 H5
H6 H6
H1' H1'
HO1A HO1A
HO1B HO1B
HO1G HO1G
H2' H2'
H2'A H2'A
H3' H3'
HO3' HO3'
H3A H3A
H3AA H3AA
HO3G HO3G
H4' H4'
H5' H5'
H5'A H5'A
HN3 HN3