Atom Nomenclature for PU

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 PU

Atom Name (V3) Atom Name (V2)
P P
OP1 O1P
OP2 O2P
OP3 O3P
N N
CA CA
C C
O O
CB CB
CG CG
CD1 CD1
CD2 CD2
CE1 CE1
CE2 CE2
CZ CZ
OC OC
CM CM
O5' O5*
C5' C5*
C4' C4*
O4' O4*
C3' C3*
N3' N3*
C2' C2*
O2' O2*
C1' C1*
N9 N9
C8 C8
N7 N7
C5 C5
C6 C6
N6 N6
C9 C9
C10 C10
N1 N1
C2 C2
C4 C4
N3 N3
HOP2 2HOP
HOP3 3HOP
HN1 1HN
HA HA
HB1 1HB
HB2 2HB
HD1 HD1
HD2 HD2
HE1 HE1
HE2 HE2
HM1 1HM
HM2 2HM
HM3 3HM
HO5' H5T
H5' 1H5*
H5'' 2H5*
H4' H4*
H3' H3*
HN'3 3HN*
H2' H2*
HO2' *HO2
H1' H1*
H8 H8
H91 1H9
H92 2H9
H93 3H9
H101 1H10
H102 2H10
H103 3H10
H2 H2