Functional Study of Deinococcus radiodurans Carotenoid against Irradiation

Publisher: Trans Tech Publications

E-ISSN: 1662-8985|2014|1073|1867-1870

ISSN: 1022-6680

Source: Advanced Materials Research, Vol.2014, Iss.1073, 2015-01, pp. : 1867-1870

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Abstract

Deinococcus radiodurans strain R1 synthesizes deinoxanthin, a unique carotenoid product, which contributes to cell resistance following various stresses. The biosynthetic pathway of deinoxanthin is unclear, although several enzymes are presumed to be involved. The lack of CrtD decreased the antioxidant capacity of the mutant deficient in dr2250 compared with the wild-type, indicating that the C-3',4'-desaturation step contributes to the antioxidant capacity of deinoxanthin in D. radiodurans.