Atom Nomenclature for XLD

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 XLD

Atom Name (V3) Atom Name (V2)
C1 C1
N2 N2
C3 C3
C4 C4
CL1 CL1
C5 C5
C6 C6
N7 N7
C9 C9
O10 O10
C11 C11
C12 C12
C13 C13
C14 C14
C15 C15
CL2 CL2
C16 C16
O17 O17
C18 C18
N19 N19
C20 C20
O21 O21
C22 C22
S23 S23
C24 C24
C25 C25
C26 C26
CL3 CL3
C28 C28
N29 N29
C31 C31
C32 C32
N33 N33
C34 C34
C35 C35
O36 O36
HC3 HC3
HC5 HC5
HC6 HC6
HN7 HN7
H141 1H14
H161 1H16
H181 1H18
H182 2H18
H183 3H18
H191 1H19
H241 1H24
H281 1H28
H282 2H28
H311 1H31
H312 2H31
H313 3H31
H341 1H34
H342 2H34
H351 1H35
H352 2H35