Atom Nomenclature for 2SA

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 2SA

Atom Name (V3) Atom Name (V2)
PA PA
O1A O1A
O2A O2A
O3A O3A
O5' O5'
C5' C5'
C4' C4'
O4' O4'
C1' C1'
N9 N9
C4 C4
N3 N3
C2 C2
N1 N1
C6 C6
N6 N6
C61 C61
C62 C62
C63 C63
C64 C64
O65 O65
O66 O66
O67 O67
O68 O68
C5 C5
N7 N7
C8 C8
C2' C2'
O2' O2'
C3' C3'
O3' O3'
HO1 HO1
H2A H2A
HC51 1HC5
HC52 2HC5
HC4 HC4
HC1 HC1
HC2 HC2
HN6 HN6
H61 H61
H631 1H63
H632 2H63
H66 H66
H67 H67
HC8 HC8
H2' H2'
HO2 HO2
HC3 HC3
HO3 HO3