Atom Nomenclature for FCI

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 FCI

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
C7 C7
C8 C8
C9 C9
C10 C10
C11 C11
C13 C13
C14 C14
C16 C16
C17 C17
C18 C18
C21 C21
C24 C24
C25 C25
C27 C27
C29 C29
C30 C30
C32 C32
C34 C34
C35 C35
C36 C36
C37 C37
C38 C38
FE FE
N1 N1
N2 N2
N3 N3
N4 N4
N5 N5
N6 N6
N7 N7
N8 N8
N9 N9
O1 O1
O2 O2
O3 O3
O4 O4
O5 O5
O6 O6
O7 O7
O8 O8
O10 O10
O11 O11
O14 O14
O17 O17
O18 O18
H10 H10
H11 H11
H13 H13
H141 H141
H142 H142
H16 H16
H171 H171
H172 H172
H181 H181
H182 H182
H211 H211
H212 H212
H241 H241
H242 H242
H251 H251
H252 H252
H271 H271
H272 H272
H291 H291
H292 H292
H301 H301
H302 H302
H321 H321
H322 H322
H341 H341
H342 H342
H351 H351
H352 H352
H353 H353
H361 H361
H362 H362
H363 H363
H371 H371
H372 H372
H373 H373
H381 H381
H382 H382
HN1 HN1
HN2 HN2
HN3 HN3
HN4 HN4
HN7 HN7
HN9 HN9
H18 H18