photoreactivatingadj.
/ˌfəʊtəʊrɪˈaktᵻveɪtɪŋ/, U.S. /ˈˌfoʊdoʊˌriˈæktəˌveɪdɪŋ/ Biology.
Involved in or bringing about photoreactivation.
ΘΚΠ
the world > life > biology > biological processes > light-related processes > [adjective] > other processes
photobiological1907
photoreversible1941
photoreactivable1952
photoreactivated1953
photoreactivating1955
photoprotective1961
photoconvertible1962
photoabsorbing1966
photorepairable1966
1955 Proc. National Acad. Sci. U.S.A. 41 1007 (caption) Ultraviolet plus photoreactivating light.
1958 Jrnl. Gen. Physiol. 41 463 (heading) Subcellular nature of the photoreactivating system.
1987 A. P. James & A. Nasim in A. H. Rose & J. S. Harrison Yeasts (ed. 2) II. iv. 75 The response of different species of Hansensula to photoreactivating light has been used to study the evolutionary relationships among these species.
2004 Global Change Biol. 10 408 This hypothesis was tested by examining the levels of UV-induced DNA damage..in the presence and absence of longer-wavelength photoreactivating radiation (PRR) that induces photoenzymatic repair..of DNA damage.
Compounds
photoreactivating enzyme n. an enzyme which, under the influence of light, catalyses the repair of genetic material damaged by ultraviolet irradiation; spec. = photolyase n.
ΚΠ
1960 Jrnl. Gen. Physiol. 43 592 This photoreactivating enzyme (PRE) is interesting for two reasons. First, it is a photoenzyme, and few enzymes involved in photochemical reactions are known at present. Second, it acts on DNA in vitro without depolymerizing it.
1975 Nature 11 Sept. 133/1 Photoreactivation is a DNA repair process in which the photoreactivating enzyme (PRE) monomerises pyrimidine dimers induced by ultraviolet light.
1999 Science (Nexis) 3 Dec. 1897 Direct reversal of UV damage by photoreactivating enzymes has not been detected in placental mammals.
This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).
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adj.1955