Atom Nomenclature for 3KC

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 3KC

Atom Name (V3) Atom Name (V2)
C4 C4
C5 C5
C6 C6
C8 C8
C13 C13
C15 C15
C17 C17
C21 C21
C24 C24
C26 C26
O1 O1
C2 C2
C3 C3
CL7 CL7
C9 C9
N10 N10
C11 C11
C12 C12
C14 C14
C16 C16
C18 C18
C19 C19
N20 N20
N22 N22
C25 C25
H4 H4
H8 H8
H13 H13
H15 H15
H24 H24
HO1 HO1
H3 H3
H12 H12
H14 H14
H18 H18
H19 H19
HN22 HN22