Atom Nomenclature for EAA

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 EAA

Atom Name (V3) Atom Name (V2)
C1 C1
O2 O2
C2 C2
CL1 CL1
C3 C3
CL2 CL2
C4 C4
C5 C5
C6 C6
C7 C7
O1 O1
C8 C8
C9 C9
C10 C10
C11 C11
C12 C12
C13 C13
O O
OXT OXT
H5 H5
H6 H6
H91 1H9
H92 2H9
H101 1H10
H102 2H10
H103 3H10
H111 1H11
H112 2H11
H121 1H12
H122 2H12
HXT HXT