1P59: Structure Of A Non-covalent Endonuclease Iii-dna Complex

Citation:
Abstract
Nearly all cells express proteins that confer resistance to the mutagenic effects of oxidative DNA damage. The primary defense against the toxicity of oxidative nucleobase lesions in DNA is the base-excision repair (BER) pathway. Endonuclease III (EndoIII) is a [4Fe-4S] cluster-containing DNA glycosylase with repair activity specific for oxidized pyrimidine lesions in duplex DNA. We have determined the crystal structure of a trapped intermediate that represents EndoIII frozen in the act of repairing DNA. The structure of the protein-DNA complex provides insight into the ability of EndoIII to recognize and repair a diverse array of oxidatively damaged bases. This structure also suggests a rationale for the frequent occurrence in certain human cancers of a specific mutation in the related DNA repair protein MYH.
PDB ID: 1P59Download
MMDB ID: 70616
PDB Deposition Date: 2003/4/25
Updated in MMDB: 2017/11
Experimental Method:
x-ray diffraction
Resolution: 2.5  Å
Source Organism:
Geobacillus stearothermophilus
Similar Structures:
Biological Unit for 1P59: trimeric; determined by author
Molecular Components in 1P59
Label Count Molecule
Protein (1 molecule)
1
Endonuclease III
Molecule annotation
Nucleotides(2 molecules)
1
5'-d(*ap*ap*gp*ap*cp*gp*(5iu)p*gp*gp*ap*c)-3'
Molecule annotation
1
5'-d(tp*gp*(5iu)p*cp*cp*ap*(3dr)p*gp*(5iu)p*cp*t)-3'
Molecule annotation
Chemicals (3 molecules)
1
1
2
1
3
1
Molecule information is not avaliable.
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Citing MMDB
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