Atom Nomenclature for X0B

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 X0B

Atom Name (V3) Atom Name (V2)
O1 O1
C19 C19
O O
C18 C18
N3 N3
C20 C20
C21 C21
C22 C22
C23 C23
O24 O24
C25 C25
C30 C30
C29 C29
C28 C28
C31 C31
N4 N4
C27 C27
C26 C26
S1 S1
C17 C17
C14 C14
C15 C15
C16 C16
C11 C11
C10 C10
C9 C9
C8 C8
C13 C13
C12 C12
C7 C7
N2 N2
N1 N1
C6 C6
S S
C3 C3
C2 C2
C1 C1
N N
C4 C4
C5 C5
C C
H1 H1
H211 H211
H212 H212
H221 H221
H222 H222
H231 H231
H232 H232
H30 H30
H26 H26
H29 H29
H311 H311
H312 H312
H27 H27
H41N H41N
H42N H42N
H15 H15
H13 H13
H16 H16
H101 H101
H102 H102
H91C H91C
H92C H92C
H81C H81C
H82C H82C
HA HA
H2 H2
HB HB
H H
H5 H5