Atom Nomenclature for UPE

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 UPE

Atom Name (V3) Atom Name (V2)
P P
N1 N1
C2 C2
O2 O2
N3 N3
C4 C4
O4 O4
C5 C5
C6 C6
C1' C1'
C2' C2'
C21 C21
O22 O22
N23 N23
C24 C24
C25 C25
C26 C26
C27 C27
C28 C28
C29 C29
C3' C3'
O3' O3'
C30 C30
C31 C31
C4' C4'
O4' O4'
C5' C5'
O5' O5'
OP1 OP1
OP2 OP2
OP3 OP3
HN3 HN3
H6 H6
H1' H1'
H2' H2'
H2'A H2'A
HN23 HN23
H24 H24
H24A H24A
H25 H25
H25A H25A
H27 H27
H28 H28
H29 H29
H3' H3'
HO3' HO3'
H30 H30
H31 H31
H4' H4'
H5' H5'
H5'A H5'A
HOP2 HOP2
HOP3 HOP3