Atom Nomenclature for HBH

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 HBH

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
C3 C3
C7 C7
C8 C8
C10 C10
C11 C11
C12 C12
C13 C13
C16 C16
C20 C20
N26 N26
C27 C27
C30 C30
C31 C31
C35 C35
C4 C4
C5 C5
C6 C6
O9 O9
O14 O14
N15 N15
C17 C17
C18 C18
O19 O19
N19 N19
O21 O21
N22 N22
C23 C23
O24 O24
C25 C25
C28 C28
C29 C29
S32 S32
O33 O33
O34 O34
C36 C36
C37 C37
C38 C38
C39 C39
C40 C40
H1 H1
H21 1H2
H22A 2H2
H7 H7
H8 H8
H101 1H10
H102 2H10
H111 1H11
H112 2H11
H121 1H12
H122 2H12
H16 H16
H271 1H27
H272 2H27
H301 1H30
H302 2H30
H303 3H30
H311 1H31
H312 2H31
H313 3H31
H4 H4
H5 H5
H15 H15
H171 1H17
H172 2H17
H191 1H19
H192 2H19
H22 H22
H23 H23
H24 H24
H251 1H25
H252 2H25
H281 1H28
H282 2H28
H29 H29
H36 H36
H37 H37
H38 H38
H39 H39
H40 H40