Atom Nomenclature for XPR

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 XPR

Atom Name (V3) Atom Name (V2)
N N32
CD C33
CG C34
CB C35
CA C36
C14 C37
C13 C39
C12 C42
C11 C43
O2 O49
S S51
OS1 O52
OS2 O53
OS3 O54
C C55
O O56
HD2 H20
HG2 H21
HB2 H22
HB3 H23
HA H24
H25 H25
H26 H26
H27 H27
H28 H28
H29 H29
H30 H30
H31 H31
H32 H32
H H
OXT OXT
HXT HXT