Atom Nomenclature for X1N

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 X1N

Atom Name (V3) Atom Name (V2)
O9B O9B
N7B N7B
O8B O8B
C3B C3B
C2B C2B
C4B C4B
C5B C5B
C6B C6B
C1B C1B
N7 N7
C2 C2
N3 N3
C4 C4
C5A C5A
S4A S4A
C3A C3A
C20 C20
N2A N2A
C1A C1A
C6A C6A
C60 C60
C5 C5
C6 C6
N1 N1
H2B H2B
H4B H4B
H5B H5B
H6B1 H6B1
H6B2 H6B2
H201 H201
H202 H202
H203 H203
H6A1 H6A1
H6A2 H6A2
H601 H601
H602 H602
H6 H6