Atom Nomenclature for EHA

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 EHA

Atom Name (V3) Atom Name (V2)
CAN CAN
CAO CAO
CAP CAP
CAQ CAQ
CAR CAR
CAL CAL
CAK CAK
OAM OAM
CAH CAH
CAG CAG
CAI CAI
CAJ CAJ
CAD CAD
CAE CAE
CBK CBK
CBL CBL
CBM CBM
CAC CAC
CAB CAB
CAA CAA
CAF CAF
OBJ OBJ
CBI CBI
CBH CBH
CBG CBG
OBF OBF
CAS CAS
CAX CAX
CAT CAT
CAU CAU
CAV CAV
CAW CAW
CBA CBA
CAZ CAZ
N N
CA CA
C C
O O
OXT OXT
HAN HAN
HAO HAO
HAP HAP
HAQ HAQ
HAR HAR
HAG HAG
HAI HAI
HAJ HAJ
HBK1 1HBK
HBK2 2HBK
HBL1 1HBL
HBL2 2HBL
HBM1 1HBM
HBM2 2HBM
HBM3 3HBM
HAB HAB
HAA HAA
HBI1 1HBI
HBI2 2HBI
HBH1 1HBH
HBH2 2HBH
HBG1 1HBG
HBG2 2HBG
HAX HAX
HAT HAT
HAU HAU
HBA HBA
HAZ HAZ
HA1 1HA
HA2 2HA
HO HO