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.

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...