Atom Nomenclature for CRL

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 CRL

Atom Name (V3) Atom Name (V2)
N1 N1
C1 C1
O1 O1
N2 N2
C2 C2
C3 C3
O2 O2
C4 C4
C5 C5
C6 C6
C7 C7
O3 O3
N3 N3
C8 C8
C9 C9
N4 N4
C10 C10
C11 C11
S1 S1
O4 O4
O5 O5
C12 C12
C13 C13
C14 C14
SI1 SI1
C15 C15
C16 C16
C17 C17
HN1 HN1
H21 1H2
H22 2H2
H31 1H3
H32 2H3
H41 1H4
H42 2H4
H51 1H5
H52 2H5
H6 H6
HN3 HN3
H101 1H10
H102 2H10
H111 1H11
H112 2H11
H121 1H12
H122 2H12
H131 1H13
H132 2H13
H141 1H14
H142 2H14
H151 1H15
H152 2H15
H153 3H15
H161 1H16
H162 2H16
H163 3H16
H171 1H17
H172 2H17
H173 3H17