Atom Nomenclature for UN7

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 UN7

Atom Name (V3) Atom Name (V2)
O53 O53
S33 S33
O51 O51
O52 O52
N9 N9
C5 C5
C4 C4
C2 C2
C6 C6
C3 C3
C7 C7
C1 C1
C19 C19
N15 N15
C13 C13
C16 C16
N27 N27
C28 C28
O26 O26
C20 C20
O21 O21
C22 C22
C25 C25
C35 C35
C39 C39
C42 C42
C46 C46
O49 O49
O48 O48
C38 C38
C41 C41
C40 C40
H53 H53
HN9 HN9
H4 H4
H2 H2
H71 1H7
H72 2H7
H1 H1
H191 1H19
H192 2H19
H13 H13
H27 H27
H281 1H28
H282 2H28
H283 3H28
H221 1H22
H222 2H22
H251 1H25
H252 2H25
H39 H39
H49 H49
H38 H38
H41 H41
H40 H40