Medical Definition of Deoxyribodipyrimidine photo-lyase
An enzyme in yeast that is activated by light, whereupon it can reverse a previous photochemical reaction by cleaving the cyclobutane ring of the thymine dimer.
It catalyses the reactivation by light of UV-irradiated DNA and cleaves two carbon-carbon bonds in pyrimidine dimers in DNA.
Synonym: dipyrimidine photolyase, photoreactivating enzyme.
Chemical name: Deoxyribocyclobutadipyrimidine pyrimidine-lyase
Registry number: EC 18.104.22.168
(21 Jun 2000)
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