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Gene Review

uvsE  -  putative UV damage endonuclease

Deinococcus radiodurans R1

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Disease relevance of uvsE

  • Genetic evidence that the uvsE gene product of Deinococcus radiodurans R1 is a UV damage endonuclease [1].

High impact information on uvsE

  • The genome of a radiation-resistant bacterium, Deinococcus radiodurans, contains one uvsE gene and two uvrA genes, uvrA1 and uvrA2 [2].
  • The three genes uvsC, uvsD and uvsE, that code for UV endonuclease beta, were all present in the 46.0-kb hybrid cosmid pUE60 [3].
  • The uvsE gene in a 12.2-kb fragment was subcloned into the HindIII site of pAT153 and the size of the insert reduced to 6.1 kb by deletion of a 6.7-kb fragment from the hybrid plasmid pUE62 [3].
  • Roles of the uvsC, uvsD, uvsE, and mtcA genes in the two pyrimidine dimer excision repair pathways of Deinococcus radiodurans [4].
  • Strains deficient in DNA incision have greatly reduced DNA degradation after UV irradiation, and upon addition of chloramphenicol to the postirradiation medium, they do not undergo excessive DNA degradation as is seen in the wild-type strain and strains singly mutant in uvsC, uvsD, or uvsE [4].

Biological context of uvsE

  • The endonuclease was absent from strains mutant in the uvsC, uvsD or uvsE genes identifying it as 'UV endonuclease beta' responsible for the initial incision step of one excision-repair pathway for the removal of pyrimidine dimers from D. radiodurans DNA in vivo [5].


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