photolyasen.
/ˌfəʊtəʊˈlʌɪeɪz/, U.S. /ˌfoʊdoʊˈlaɪˌeɪz/, /ˌfoʊdoʊˈlaɪˌeɪs/ Biochemistry.
A photoreactivating enzyme which, under the influence of light, catalyses the separation of pyrimidine dimers formed in DNA by the action of ultraviolet irradiation.
ΚΠ
1972 Physiol. Chem. & Physics 4 467 (title) Separation of an activator of purified DNA photolyase from baker's yeast.
1996 Science 5 Apr. 48/1 The enzyme, called photoreactivating enzyme or photolyase, binds to UV-damaged DNA and on absorbing a blue-light photon (of wavelength 350 to 450 nm) splits the cyclobutane ring of a CPD [= cyclobutane pyrimidine dimer], restoring the bases to their native form.
2001 Conservation Biol. 15 916/1 In many organisms, including higher plants and animals, UV-B radiation induces the production of photolyase, the DNA repair enzyme..in epidermal tissues.
This is a new entry (OED Third Edition, March 2006; most recently modified version published online March 2022).
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n.1972