Atom Nomenclature for 4BT

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 4BT

Atom Name (V3) Atom Name (V2)
CA CA
CB CB
C4 C4
C5 C5
C6 C6
C1 C1
C2 C2
C3 C3
CD CD
CC CC
N1' N1'
C' C'
S' S'
N2' N2'
N1 N1
C C
S S
N2 N2
HCA1 1HCA
HCA2 2HCA
HCB1 1HCB
HCB2 2HCB
H51 1H5
H61 1H6
H21 1H2
H31 1H3
HCD1 1HCD
HCD2 2HCD
HCC1 1HCC
HCC2 2HCC
H1'1 1H1'
H1'2 2H1'
HN2' HN2'
HN11 1HN1
HN12 2HN1
HN21 1HN2