Atom Nomenclature for V78

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 V78

Atom Name (V3) Atom Name (V2)
CAR CAR
CAT CAT
CBS CBS
CBF CBF
CAU CAU
CAS CAS
CBQ CBQ
CBB CBB
CAM CAM
CAL CAL
CAZ CAZ
NBH NBH
C C
O O
CA CA
CB CB
CG1 CG1
CG2 CG2
N N
CBP CBP
OAJ OAJ
CCA CCA
OAK OAK
CBD CBD
CBA CBA
CBC CBC
NBY NBY
NBK NBK
CBO CBO
OAI OAI
CBX CBX
CBZ CBZ
CAD CAD
CAE CAE
CAF CAF
NBI NBI
CBM CBM
OAG OAG
OBL OBL
CAA CAA
CBE CBE
CXQ CXQ
CXV CXV
CXW CXW
CXP CXP
CXR CXR
CXA CXA
CXY CXY
CXZ CXZ
CXT CXT
SAI SAI
CXG CXG
HAR HAR
HAT HAT
HBF1 HBF1
HBF2 HBF2
HAU HAU
HAS HAS
HBB1 HBB1
HBB2 HBB2
HAM HAM
HAL HAL
HAZ1 HAZ1
HAZ2 HAZ2
HBH HBH
HA HA
HB HB
H H
HG11 HG11
HG12 HG12
HG13 HG13
HG21 HG21
HG22 HG22
HG23 HG23
HAK HAK
HBD1 HBD1
HBD2 HBD2
HBA1 HBA1
HBA2 HBA2
HBC1 HBC1
HBC2 HBC2
HBK HBK
HBE1 HBE1
HBE2 HBE2
HBX HBX
HBI HBI
HAD1 HAD1
HAD2 HAD2
HAD3 HAD3
HAE1 HAE1
HAE2 HAE2
HAE3 HAE3
HAF1 HAF1
HAF2 HAF2
HAF3 HAF3
HAA1 HAA1
HAA2 HAA2
HAA3 HAA3
HXV HXV
HXP HXP
HXW HXW
HXR HXR
HXY HXY
HXZ1 HXZ1
HXZ2 HXZ2
HXG HXG
HXT HXT