Atom Nomenclature for IHE

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 IHE

Atom Name (V3) Atom Name (V2)
C01 C01
C02 C02
N03 N03
C04 C04
C05 C05
N06 N06
C15 C15
C16 C16
C17 C17
N18 N18
C19 C19
N20 N20
C21 C21
N22 N22
C23 C23
N24 N24
C25 C25
C26 C26
N28 N28
C29 C29
C30 C30
C31 C31
C32 C32
C33 C33
C34 C34
N35 N35
C27 C27
H011 1H01
H012 2H01
H021 1H02
H022 2H02
H041 1H04
H042 2H04
H051 1H05
H052 2H05
H151 1H15
H152 2H15
H153 3H15
H161 1H16
H162 2H16
H171 1H17
H172 2H17
H19 H19
H28 H28
H29 H29
H301 1H30
H302 2H30
H311 1H31
H312 2H31
H321 1H32
H322 2H32
H331 1H33
H332 2H33
H341 1H34
H342 2H34