单词	repressor
释义	repressor noun re·​pres·​sor ri-ˈpre-sər  : one that represses especially : a protein that is determined by a regulatory gene, binds to a genetic operator, and inhibits the initiation of transcription of messenger RNA Example Sentences Recent Examples on the Web Once all the cells in the plant have turned off their repressor gene, buds begin to form, usually just in time for the spring heat to spur new growth. Jonathan Kauffman, Bon Appétit, 13 Apr. 2022 Netanyahu is on trial for corruption and heads a state that is widely seen as a repressor of Palestinian rights. Tracy Wilkinson Staff Writer, Los Angeles Times, 26 May 2021 The researchers enhanced this silencing effect by hitching Cas9 to a repressor, another protein that inhibits gene expression. Kelly Servick, Science | AAAS, 10 Mar. 2021 But no one had identified a full activator-repressor system involved in periodic pigmentation patterns. Elizabeth Pennisi, Science | AAAS, 29 Aug. 2019 The cycle at the center of it—from gene activators to repressors and back—is highly regulated. John Timmer, Ars Technica, 2 Oct. 2017 Word History Etymology New Latin First Known Use 1584, in the meaning defined above Medical Definition repressor noun re·​pres·​sor ri-ˈpres-ər  : one that represses especially : a protein that is determined by a regulatory gene, binds to a genetic operator, and inhibits the initiation of transcription of messenger RNA
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