What is the mechanism of repair of dimerized pyrimidines caused by UV light? a. Direct reversion of the chemical modification that caused the damag...
What is the mechanism of repair of dimerized pyrimidines caused by UV light?
a. Direct reversion of the chemical modification that caused the damage.
b. Removal of the damaged base by cleaving the base-sugar bond.
c. Removal of the damaged base by endonucleolytic incisions on both sides of the lesion.
d. Recognition of the damaged base by DNA glycosylases, followed by the cleavage of the base-sugar bond.
a. Direct reversion of the chemical modification that caused the damage.
b. Removal of the damaged base by cleaving the base-sugar bond.
c. Removal of the damaged base by endonucleolytic incisions on both sides of the lesion.
d. Recognition of the damaged base by DNA glycosylases, followed by the cleavage of the base-sugar bond.
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Ed 
O mecanismo de reparo de dímeros de pirimidina causados pela luz UV é a letra D: reconhecimento da base danificada por glicosilases de DNA, seguido pela clivagem da ligação base-açúcar. As glicosilases de DNA são enzimas que reconhecem e removem bases danificadas do DNA, permitindo que a célula repare o dano.
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