Atom Nomenclature for SPP

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 SPP

Atom Name (V3) Atom Name (V2)
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
C8 C8
C9 C9
C11 C11
C12 C12
C C
C14 C14
C15 C15
C16 C16
C17 C17
C18 C18
C19 C19
C20 C20
C21 C21
CA CA
CB CB
CC CC
CE CE
N N
N1 N1
N7 N7
N10 N10
N13 N13
ND ND
O O
OS1 OS1
OS2 OS2
S S
H4 H4
H5 H5
H6 H6
H81 H81
H82 H82
H91 H91
H92 H92
H111 H111
H112 H112
H121 H121
H122 H122
H15 H15
H16 H16
H18 H18
H19 H19
HA HA
HB1 HB1
HB2 HB2
HB3 HB3
HC1 HC1
HC2 HC2
HC3 HC3
HE1 HE1
HE2 HE2
HE3 HE3
HN HN
HN3 HN3
HND HND