Atom Nomenclature for JNH

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 JNH

Atom Name (V3) Atom Name (V2)
N1 N1
C1 C1
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
O1 O1
N2 N2
C7 C7
C8 C8
C9 C9
C10 C10
C11 C11
C12 C12
C13 C13
C14 C14
C15 C15
C16 C16
C17 C17
C18 C18
C19 C19
C20 C20
N3 N3
H1 H1
H21 1H2
H22 2H2
H31 1H3
H32 2H3
H41 1H4
H42 2H4
H6 H6
HN21 1HN2
HN22 2HN2
H71 1H7
H72 2H7
H9 H9
H10 H10
H12 H12
H13 H13
H14 H14
H15 H15
H16 H16
H18 H18
H19 H19
H201 1H20
H202 2H20
HN31 1HN3
HN32 2HN3