Atom Nomenclature for DDT

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 DDT

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
C3 C3
C4 C4
C4A C4A
C5 C5
C6 C6
C7 C7
C8 C8
C8A C8A
C9 C9
C10 C10
N1 N1
C11 C11
C12 C12
C13 C13
C14 C14
C15 C15
C16 C16
C17 C17
C18 C18
C19 C19
S S
O1 O1
O2 O2
N N
OC1 OC1
OC2 OC2
O O
S' S*
O1' O1*
O2' O2*
C1' C1*
C2' C2*
C3' C3*
C4' C4*
C4X C4A*
C5' C5*
C6' C6*
C7' C7*
C8' C8*
C8X C8A*
C9' C9*
CA' C10*
N1' N1*
HC2 HC2
HC3 HC3
HC4 HC4
HC6 HC6
HC7 HC7
HC8 HC8
HC91 1HC9
HC92 2HC9
HC93 3HC9
H101 1H10
H102 2H10
H103 3H10
HC11 HC11
H131 1H13
H132 2H13
HC15 HC15
HC16 HC16
HC18 HC18
HC19 HC19
H H
HXT HXT
H2'1 1H2*
H3'1 1H3*
H4'1 1H4*
H6'1 1H6*
H7'1 1H7*
H8'1 1H8*
H9'1 1H9*
H9'2 2H9*
H9'3 3H9*
HB1 1H**
HB2 2H**
HB3 3H**