Atom Nomenclature for NSP

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 NSP

Atom Name (V3) Atom Name (V2)
N N
CA CA
CP CP
CQ1 CQ1
CQ2 CQ2
NR1 NR1
NQ2 NQ2
NR2 NR2
CS CS
CS1 CS1
HN1 1HN
HN2 2HN
HCA1 1HCA
HCA2 2HCA
HQ1 HQ1
HQ21 1HQ2
HQ22 2HQ2
HS11 1HS1
HS12 2HS1
HS13 3HS1