Atom Nomenclature for 3Q1

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 3Q1

Atom Name (V3) Atom Name (V2)
C9 C9
C8 C8
C6 C6
C12 C12
C10 C10
C7 C7
C5 C5
C11 C11
C13 C13
C2 C2
C15 C15
C19 C19
C23 C23
C20 C20
C22 C22
N17 N17
N14 N14
N3 N3
N4 N4
N18 N18
N1 N1
N16 N16
O21 O21
H9 H9
H8 H8
H6 H6
H12 H12
H19 H19
H19A H19A
H23 H23
H23A H23A
H20 H20
H20A H20A
H22 H22
H22A H22A
HN1 HN1
HN1A HN1A
HN16 HN16
HN1B HN1B
HN3 HN3