1RPL image
Entry Detail
PDB ID:
1RPL
Keywords:
NUCLEOTIDYLTRANSFERASE
Title:
2.3 ANGSTROMS CRYSTAL STRUCTURE OF THE CATALYTIC DOMAIN OF DNA POLYMERASE BETA
Biological Source:
Source Organism:
Rattus norvegicus
Host Organism:
Escherichia coli
PDB Version:
Deposition Date:
1994-10-25
Release Date:
1995-01-26
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.30 Å
R-Value Work:
0.22
R-Value Observed:
0.22
Space Group:
P 21 21 2
1RPL validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:DNA POLYMERASE BETA
Chain IDs:A
Chain Length:251
Number of Molecules:1
Biological Source:Rattus norvegicus
UniProt ID:P06766 Pfam ID:PF10391, PF14792, PF14791
Primary Citation
2.3 A crystal structure of the catalytic domain of DNA polymerase beta.
Cell(Cambridge,Mass.) 76 1123 1133 (1994)
PMID: 8137427 DOI: 10.1016/0092-8674(94)90388-3

Abstact

The crystal structure of the catalytic domain of rat DNA polymerase beta (pol beta) has been determined at 2.3 A resolution and refined to an R factor of 0.22. The mixed alpha/beta protein has three subdomains arranged in an overall U shape reminiscent of other polymerase structures. The folding topology of pol beta, however, is unique. Two divalent metals bind near three aspartic acid residues implicated in the catalytic activity. In the presence of Mn2+ and dTTP, interpretable electron density is seen for two metals and the triphosphate, but not the deoxythymidine moiety. The principal interaction of the triphosphate moiety is with the bound divalent metals.

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Primary Citation of related structures
1RPL