Atom Nomenclature for CA4

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 CA4

Atom Name (V3) Atom Name (V2)
C4 C4
C14 C14
C5 C5
C6 C6
C11 C11
C7 C7
C8 C8
C9 C9
C10 C10
C12 C12
C13 C13
C3 C3
C19 C19
C1 C1
C22 C22
C2 C2
O3 O3
CL6 CL6
C18 C18
C15 C15
C16 C16
C17 C17
C20 C20
C21 C21
O20 O20
O17 O17
C23 C23
C24 C24
O23 O23
H4 H4
H14 H14
H111 1H11
H112 2H11
H7 H7
H8 H8
H9 H9
H121 1H12
H122 2H12
H191 1H19
H192 2H19
H193 3H19
H1 H1
H221 1H22
H222 2H22
H2 H2
H181 1H18
H182 2H18
H183 3H18
H151 1H15
H152 2H15
H161 1H16
H162 2H16
H211 1H21
H212 2H21
H213 3H21
H241 1H24
H242 2H24
H243 3H24