Atom Nomenclature for MXX

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 MXX

Atom Name (V3) Atom Name (V2)
O17 O17
C9 C9
N10 N10
C16 C16
C3 C3
C4 C4
O12 O12
C13 C13
C5 C5
C6 C6
C1 C1
O11 O11
C14 C14
C2 C2
C7 C7
C15 C15
C8 C8
H16 H16
H16A H16A
H16B H16B
H13 H13
H13A H13A
H13B H13B
H5 H5
H6 H6
H14 H14
H14A H14A
H14B H14B
H15 H15
H15A H15A
H15B H15B
H8 H8