Atom Nomenclature for 00K

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 00K

Atom Name (V3) Atom Name (V2)
C1 C1
N1 N1
O1 O1
C2 C2
N2 N2
O2 O2
C3 C3
N3 N3
C4 C4
C5 C5
C6 C6
C7 C7
C8 C8
C9 C9
C10 C10
C11 C11
C12 C12
C13 C13
C14 C14
C15 C15
C C
N N
O O
CA CA
CB CB
CD CD
CE CE
CG CG
CX CX
OX OX
NZ NZ
C1X C1X
C6X C6X
C5X C5X
C4X C4X
C3X C3X
C2X C2X
NX NX
H1 H1
H2 H2
H2A H2A
H3 H3
H3A H3A
HN3 HN3
HN3A HN3A
H4 H4
H4A H4A
H5 H5
H5A H5A
H9 H9
H9A H9A
H11 H11
H12 H12
H13 H13
H14 H14
H15 H15
HN HN
HO HO
HA HA
HB HB
HD HD
HDA HDA
HE HE
HG HG
HNZ HNZ
H40 H40
H41 H41
H42 H42
H43 H43
H44 H44
H6X H6X
H5X H5X
H4X H4X
H3X H3X
H2X H2X
HNX HNX
H1X H1X
H2XA H2XA
H3XA H3XA
H4XA H4XA
H5XA H5XA
H6XA H6XA