Atom Nomenclature for 373

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 373

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
N11 N11
C12 C12
C13 C13
C14 C14
C16 C16
N17 N17
C18 C18
C19 C19
C20 C20
C24 C24
C25 C25
C26 C26
C27 C27
C31 C31
N32 N32
C35 C35
C36 C36
C37 C37
C38 C38
C39 C39
C48 C48
N50 N50
O1 O1
H2 H2
H3 H3
H4 H4
H5 H5
HN11 HN11
H14 H14
HN17 HN17
H20 H20
H24 H24
H25 H25
H27 H27
H311 1H31
H312 2H31
H351 1H35
H352 2H35
H361 1H36
H362 2H36
H37 H37
H381 1H38
H382 2H38
H391 1H39
H392 2H39
H481 1H48
H482 2H48
H501 1H50
H502 2H50