deoxyribodipyrimidine photolyase

de·ox·y·ri·bo·di·py·rim·i·dine pho·to·ly·ase

(dē-oks'ē-rī'bō-dī-pī-rim'i-dēn fō'tō-lī'ās),

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.

Synonym(s): dipyrimidine photolyase, photoreactivating enzyme