Atom Nomenclature for IK8

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 IK8

Atom Name (V3) Atom Name (V2)
F F
F1 F1
F2 F2
OT1 OT1
O1 O1
N N
N1 N1
N2 N2
N3 N3
N4 N4
C C
C1 C1
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
C7 C7
C8 C8
C9 C9
C10 C10
C13 C13
C14 C14
C15 C15
C16 C16
C17 C17
C18 C18
C19 C19
N5 N5
C21 C21
C22 C22
N6 N6
C25 C25
F3 F3
C11 C11
N7 N7
C20 C20
C23 C23
HN11 HN11
HN12 HN12
HN4 HN4
H3 H3
H4 H4
H6 H6
H8 H8
H16 H16
H18 H18
H19 H19
H21 H21
H22 H22
H111 H111
H112 H112
H201 H201
H202 H202
H203 H203
H231 H231
H232 H232
H233 H233