Construction of a biosensor mutant of Comamonas testosteroni for testosterone determination by cloning the EGFP gene downstream to the regulatory region of the 3,17β-HSD gene.

Abstract excerpt

Comamonas testosteroni (C. testosteroni) is able to catabolize a variety of steroids and polycyclic aromatic hydrocarbons. 3,17β-Hydroxysteroid dehydrogenase (3,17β-HSD) from C. testosteroni is a testosterone-inducible protein and a key enzyme in steroid degradation. 3,17β-HSD is a member of the short-chain dehydrogenase/reductase (SDR) superfamily. We found that a 2.4 kb regulatory DNA fragment upstream of the...

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