Atom Nomenclature for FRT

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 FRT

Atom Name (V3) Atom Name (V2)
C1 C1
N2 N2
C3 C3
N4 N4
C5 C5
C6 C6
N7 N7
C8 C8
C9 C9
C10 C10
C11 C11
C12 C12
C13 C13
S14 S14
N15 N15
C16 C16
C17 C17
O18 O18
C19 C19
C20 C20
N21 N21
C22 C22
N23 N23
C24 C24
C25 C25
C26 C26
C27 C27
C28 C28
O29 O29
O30 O30
H6 H6
H7 H7
H5 H5
H9 H9
H13 H13
H10 H10
H12 H12
H15 H15
H161 H161
H162 H162
H171 H171
H172 H172
H191 H191
H192 H192
H193 H193
H24 H24
H25 H25
H281 H281
H282 H282
H283 H283
H261 H261
H262 H262
H263 H263
H271 H271
H272 H272
H273 H273