Atom Nomenclature for RXT

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 RXT

Atom Name (V3) Atom Name (V2)
CAK C1
CAH C2
CAI C3
CAL C4
CAU C5
CAV C6
CAJ C7
CAB C8
NAA N1
NAW N2
CAG C9
NAO N3
CAF C10
CAQ C11
CAR C12
NAM N4
CAE C13
NAP N5
CAT C14
CAS C15
CAD C16
CAC C17
NAN N6
H1 H1
H2 H2
H3 H3
H4 H4
H5 H5
H6 H6
H7 H7
H8 H8
H9 H9
H10 H10
H11 H11
H12 H12
H18 H18
H19 H19
H20 H20
H21 H21
H22 H22
H23 H23