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Sagot :
The enzyme needed for DNA repair due to UV radiation from sunlight is the photolyase enzyme.
What is a photolyase enzyme?
Photolyases are DNA repair enzymes that repair damage caused by exposure to ultraviolet light. These enzymes require visible light (from the purple/blue end of the spectrum) both for their activation and for actual DNA repair. The DNA repair mechanism that involves photolyase is called photoreactivation. They mainly convert the pyrimidine dimer to a normal pair of pyrimidine bases.
Photolyase binds to complementary DNA strands and cleaves certain types of pyrimidine dimers that arise when a pair of thymine or cytosine bases on the same DNA strand becomes covalently linked. The bond length of this dimerization is shorter than the bond length of the normal B-DNA structure which results in an incorrect template for replication and transcription. The more general covalent relationship involves the formation of a cyclobutane bridge. Photolyases have a high affinity for these lesions and reversibly bind and convert them back to their original base.
Learn more about photolyase enzyme https://brainly.com/question/9442760
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