Atom Nomenclature for COD

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 COD

Atom Name (V3) Atom Name (V2)
N1 N1
C2 C2
N3 N3
C4 C4
C5 C5
C6 C6
N7 N7
N8 N8
C9 C9
N10 N10
C11 C11
C12 C12
O13 O13
C14 C14
O15 O15
C16 C16
O17 O17
C18 C18
O19 O19
P20 P20
O21 O21
O22 O22
O23 O23
P24 P24
O25 O25
O26 O26
O27 O27
C28 C28
C29 C29
C30 C30
C31 C31
C32 C32
O33 O33
C34 C34
O35 O35
N36 N36
C37 C37
C38 C38
C39 C39
O40 O40
N41 N41
C42 C42
C43 C43
S44 S44
HC2 HC2
HN71 1HN7
HN72 2HN7
HC9 HC9
HC11 HC11
HC12 HC12
HO13 HO13
HC14 HC14
HO15 HO15
HC16 HC16
H181 1H18
H182 2H18
HO21 HO21
HO25 HO25
H281 1H28
H282 2H28
H301 1H30
H302 2H30
H303 3H30
H311 1H31
H312 2H31
H313 3H31
HC32 HC32
HO33 HO33
HN36 HN36
H371 1H37
H372 2H37
H381 1H38
H382 2H38
HN41 HN41
H421 1H42
H422 2H42
H431 1H43
H432 2H43
HS44 HS44