Atom Nomenclature for PKA

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 PKA

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
C3 C3
C4 C4
N5 N5
C6 C6
C7 C7
O8 O8
C9 C9
N18 N18
C17 C17
C10 C10
C11 C11
C12 C12
C16 C16
C13 C13
C14 C14
C15 C15
C19 C19
C24 C24
C23 C23
C20 C20
C21 C21
C22 C22
CL CL
H1C H1C
H1A H1A
H1B H1B
H2A H2A
H2B H2B
H3 H3
H4C H4C
H4A H4A
H4B H4B
H6A H6A
H6B H6B
H6C H6C
H10 H10
H12 H12
H13 H13
H14 H14
H15 H15
H23 H23
H20 H20
H21 H21
H22 H22