Atom Nomenclature for PRC

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 PRC

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
N3 N3
C4 C4
C5 C5
C6 C6
C7 C7
N8 N8
C9 C9
N10 N10
C11 C11
C12 C12
N13 N13
C14 C14
C15 C15
C16 C16
C17 C17
C18 C18
C19 C19
C20 C20
N21 N21
C22 C22
C23 C23
C25 C25
C26 C26
C27 C27
N28 N28
C29 C29
O29 O29
HC1 HC1
HC2 HC2
HC4 HC4
HC6 HC6
H11C CH11
H12C CH12
H13N NH13
H15C CH15
H17C CH17
H18C CH18
H201 1H20
H202 2H20
H203 3H20
H21N NH21
H25C CH25
H26C CH26
H27C CH27
H29C CH29