Atom Nomenclature for BB2

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 BB2

Atom Name (V3) Atom Name (V2)
C5 C5
C3 C3
O4 O4
N1 N1
O2 O2
C6 C6
C12 C12
O13 O13
C7 C7
C8 C8
C9 C9
C10 C10
C11 C11
N14 N14
C15 C15
C16 C16
C18 C18
C17 C17
C19 C19
O20 O20
N21 N21
C22 C22
C23 C23
C24 C24
C25 C25
C26 C26
O27 O27
H51 1H5
H52 2H5
HN1 HN1
HO2 HO2
H6 H6
H71 1H7
H72 2H7
H81 1H8
H82 2H8
H91 1H9
H92 2H9
H101 1H10
H102 2H10
H111 1H11
H112 2H11
H113 3H11
H14 H14
H15 H15
H16 H16
H181 1H18
H182 2H18
H183 3H18
H171 1H17
H172 2H17
H173 3H17
H22 H22
H231 1H23
H232 2H23
H241 1H24
H242 2H24
H251 1H25
H252 2H25
H261 1H26
H262 2H26
H27 H27