Atom Nomenclature for QL2

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 QL2

Atom Name (V3) Atom Name (V2)
N1 N1
C2 C2
N2 N2
N3 N3
C4 C4
C5 C5
C6 C6
N6 N6
N7 N7
C8 C8
N9 N9
CAA CAA
FAE FAE
FAF FAF
CAI CAI
CAJ CAJ
CAK CAK
CAL CAL
CAS CAS
CAT CAT
CAU CAU
CAV CAV
HN6 HN6
H8 H8
HAA HAA
HAAA HAAA
HAAB HAAB
HAI HAI
HAJ HAJ
HAK HAK
HAL HAL
HALA HALA