Atom Nomenclature for CPS

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 CPS

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
C7 C7
C8 C8
C9 C9
C10 C10
C11 C11
C12 C12
C13 C13
C14 C14
C15 C15
C16 C16
C17 C17
C18 C18
C19 C19
C20 C20
C21 C21
C22 C22
C23 C23
C24 C24
C25 C25
C26 C26
C27 C27
C28 C28
C29 C29
C30 C30
C31 C31
C32 C32
N1 N1
N2 N2
O1 O1
O2 O2
O3 O3
O4 O4
O2S O2S
O3S O3S
O1S O1S
S S
H1 H1
H1A H1A
H3 H3
H3A H3A
H4 H4
H6 H6
H7 H7
H7A H7A
H8 H8
H8A H8A
H9 H9
H10 H10
H10A H10A
H10B H10B
H11 H11
H11A H11A
H11B H11B
H12 H12
H12A H12A
H13 H13
H14 H14
H14A H14A
H15 H15
H16 H16
H16A H16A
H17 H17
H18 H18
H19 H19
H20 H20
H21 H21
H21A H21A
H21B H21B
H22 H22
H22A H22A
H23 H23
H23A H23A
H25 H25
H25A H25A
H261 H261
H271 H271
H28 H28
H28A H28A
H28B H28B
H29 H29
H29A H29A
H29B H29B
H30 H30
H30A H30A
H31 H31
H31A H31A
H32 H32
H32A H32A
HN1 HN1
HO2 HO2
HO3 HO3
HO4 HO4
H272 H272
H262 H262