Atom Nomenclature for AQU

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 AQU

Atom Name (V3) Atom Name (V2)
N1 N1
C2 C2
N3 N3
C4 C4
C5 C5
C6 C6
CAA CAA
CAB CAB
CAC CAC
NAD NAD
OAE OAE
CAF CAF
CAG CAG
CAH CAH
CAJ CAJ
CAK CAK
CAL CAL
CAM CAM
CAN CAN
CAO CAO
CAP CAP
CAQ CAQ
CAR CAR
CAS CAS
NAV NAV
NAW NAW
NAX NAX
NAY NAY
CAZ CAZ
CBA CBA
CBB CBB
CBC CBC
CBD CBD
CBE CBE
CBF CBF
NBJ NBJ
CBK CBK
H2 H2
HAA HAA
HAAA HAAA
HAAB HAAB
HAB HAB
HABA HABA
HABB HABB
HAC HAC
HACA HACA
HACB HACB
HNAD HNAD
HNAA HNAA
HAF HAF
HAG HAG
HAH HAH
HAJ HAJ
HAK HAK
HAL HAL
HAM HAM
HAN HAN
HAO HAO
HAP HAP
HAQ HAQ
HAR HAR
HAS HAS
HNAX HNAX
HNAW HNAW
HNAY HNAY