2 条结果 关键词:Comamonas testosteroni ×

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.

Chemico-biological interactions 2015 Xiong G, Maser E

睾酮可被 Comamonas testosteroni 降解,其 3,17β-羟基类固醇脱氢酶(3,17b-HSD)是睾酮诱导的关键酶,属于短链脱氢酶/还原酶(SDR)超家族。研究发现 bhsd 基因上游 2.4 kb 调控片段可响应类固醇并启动 bhsd 表达。为将该顺式调控元件用于类固醇检测,构建了 pK2.4-EGFP-4 和...

Cis- and trans-regulatory elements of 3alpha-hydroxysteroid dehydrogenase/carbonyl reductase as biosensor system for steroid determination in the environment.

Chemico-biological interactions 2009

来自 Comamonas testosteroni 的 3β-羟基类固醇脱氢酶/羰基还原酶是环境中类固醇降解的关键酶,其编码基因 hsdA 在无类固醇时仅低水平表达,存在类固醇底物时可被诱导数倍。前期研究已阐明 hsdA 的调控涉及多种激活因子与抑制因子。本研究将 hsdA 基因替换为绿色荧光蛋白(GFP)基因,并将其插入 hsdA...