Atom Nomenclature for 3CB

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 3CB

Atom Name (V3) Atom Name (V2)
C15 C15
O1 O1
N17 N17
C18 C18
C19 C19
C20 C20
C28 C28
O30 O30
N31 N31
C32 C32
C16 C16
C17 C17
C22 C22
C23 C23
C24 C24
C25 C25
C26 C26
N1 N1
C2 C2
N5 N5
N3 N3
C1 C1
C4 C4
N4 N4
C5 C5
C3 C3
S1 S1
O4 O4
O3 O3
C9 C9
C6 C6
C8 C8
C7 C7
C12 C12
C10 C10
C11 C11
C13 C13
N2 N2
C14 C14
O2 O2
O5 O5
H17 H17
H18 H18
H191 1H19
H192 2H19
H201 1H20
H202 2H20
H31 H31
H321 1H32
H322 2H32
H16 H16
H2 H2
H23 H23
H24 H24
HN1 HN1
HN51 1HN5
HN52 2HN5
HN3 HN3
H1 H1
H41 1H4
H42 2H4
HN4 HN4
H5 H5
H31A 1H3
H32 2H3
H33 3H3
H91 1H9
H92 2H9
H61 1H6
H62 2H6
H63 3H6
H7 H7
H10 H10
H11 H11
H13 H13
HN21 1HN2
HN22 2HN2
HO2 HO2