上降充通大粤 HANGHAI JIAO TONG UNIVERSITY 5.2 Mechanism of Induction:Inducer and repressor诱导物与阻遏蛋白 lac Promoter lac Operator lacZ lacY lacA RNA polymerase U Transcription blocked Repressor (a) 2012 Pearson Education.Inc. A repressor protein binds to the operator region and blocks the action of RNA polymerase.阻遏蛋白可与操纵基 因结合而阻断RNA聚合酶的行为 Chen Feng,Shanghai Jiao Tong UniversityChen Feng, Shanghai Jiao Tong University 8.5.2 Mechanism of Induction: Inducer and repressor 诱导物与阻遏蛋白 A repressor protein binds to the operator region and blocks the action of RNA polymerase.阻遏蛋白可与操纵基 因结合而阻断RNA聚合酶的行为