Atom Nomenclature for PRB

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 PRB

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
C3 C3
O3 O3
C4 C4
O4 O4
C5 C5
C6 C6
C7 C7
C8 C8
C9 C9
O9 O9
C10 C10
C11 C11
C12 C12
O12 O12
C13 C13
C14 C14
C15 C15
C16 C16
C17 C17
C18 C18
C19 C19
C20 C20
O20 O20
OA1 OA1
CA1 CA1
OA2 OA2
CA2 CA2
H1 H1
HO4 HO4
H51 1H5
H52 2H5
H7 H7
H8 H8
HO9 HO9
H10 H10
H11 H11
H12 H12
HO12 2HO1
H14 H14
H161 1H16
H162 2H16
H163 3H16
H171 1H17
H172 2H17
H173 3H17
H181 1H18
H182 2H18
H183 3H18
H191 1H19
H192 2H19
H193 3H19
H201 1H20
H202 2H20
HO20 0HO2
HA21 1HA2
HA22 2HA2
HA23 3HA2