Atom Nomenclature for RHQ

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 RHQ

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
O1 O1
C7 C7
C8 C8
C9 C9
C10 C10
C11 C11
C12 C12
C13 C13
N1 N1
C14 C14
C15 C15
C16 C16
C17 C17
C18 C18
C19 C19
C20 C20
C21 C21
C22 C22
C23 C23
N2 N2
C24 C24
C25 C25
C26 C26
O27 O27
O2 O2
C28 C28
C29 C29
H31 1H3
H61 1H6
H101 1H10
H131 1H13
HN11 1HN1
H151 1H15
H161 1H16
H171 1H17
H181 1H18
H201 1H20
H202 2H20
H203 3H20
H211 1H21
H212 2H21
H213 3H21
H221 1H22
H222 2H22
H231 1H23
H232 2H23
H233 3H23
HN21 1HN2
H241 1H24
H242 2H24
H251 1H25
H252 2H25
H253 3H25
H281 1H28
H282 2H28
H291 1H29
H292 2H29
H293 3H29