Atom Nomenclature for EQN

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 EQN

Atom Name (V3) Atom Name (V2)
CAA CAA
CAB CAB
CAC CAC
CAD CAD
OAE OAE
OAF OAF
OAG OAG
CAH CAH
CAI CAI
CAJ CAJ
CAK CAK
CAL CAL
CAM CAM
CAN CAN
CAO CAO
CAP CAP
NAQ NAQ
CAR CAR
CAS CAS
CAT CAT
CAU CAU
CAV CAV
CAW CAW
CAX CAX
CAY CAY
CAZ CAZ
HAA HAA
HAAA HAAA
HAAB HAAB
HAB HAB
HABA HABA
HABB HABB
HAC HAC
HACA HACA
HACB HACB
HAD HAD
HADA HADA
HADB HADB
HAH HAH
HAI HAI
HAJ HAJ
HAK HAK
HAL HAL
HAM HAM
HAN HAN
HAO HAO
HAOA HAOA
HAP HAP
HAPA HAPA
HNAQ HNAQ
H25 H25