When there is no lactose (inducer) the repressor protein is bound to the operator, and the induction of lactose metabolism genes is repressed.<\/p>\n\n\n\n When Lactose is present, the inducer binds to the repressor protein which changes its shape. This makes it so the repressor can no longer bind to the operator gene. RNA polymerase is now able to bind to the operator and promoter genes which also enables the transcription of the lacZ, lacY, and lacA genes.<\/p>\n\n\n\n When there is no glucose, cAMP moves a catabolite activator protein (CAP) to the CAP site. This promotes the binding of RNA polymerase to the promoter and increases transcription.<\/p>\n\n\n\n When there is lactose and no glucose, the CAP\/cAMP is bound to the CAP site and the repressor is removed from the operator (due to the presence of an inducer). This allows the lac genes to be expressed and high amounts of transcription to occur.<\/p>\n\n\n\n Finally, describe where in the process of gene expression (transcription, post-transcription, translation, post-translation) this regulation takes place.<\/p>\n\n\n\n The regulator is the repressor protein and regulation takes place at transcription. The repressor protein prevents the transcription process by physically blocking the RNA polymerase thus keeping the lac genes from being expressed. When the repressor is removed (via inducer) transcription begins and the genes are expressed.<\/p>\n","protected":false},"excerpt":{"rendered":" Old Dominion University\/BIOL294-Genetics\/Rinehart-Kim\/Module 7\/Lac Operon Regulation Draw and describe the regulation of the Escherichia coli lac operon in the following situations: When there is no lactose (inducer) the repressor protein is bound to the operator, and the induction of lactose metabolism genes is repressed. When Lactose is present, the inducer binds to the repressor protein … Continue reading Lac Operon Assignment<\/span><\/a><\/p>\n","protected":false},"author":18617,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":true,"template":"","format":"standard","meta":{"footnotes":"","wds_primary_category":0},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/sites.wp.odu.edu\/geneticsspring2023\/wp-json\/wp\/v2\/posts\/199"}],"collection":[{"href":"https:\/\/sites.wp.odu.edu\/geneticsspring2023\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sites.wp.odu.edu\/geneticsspring2023\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sites.wp.odu.edu\/geneticsspring2023\/wp-json\/wp\/v2\/users\/18617"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.wp.odu.edu\/geneticsspring2023\/wp-json\/wp\/v2\/comments?post=199"}],"version-history":[{"count":1,"href":"https:\/\/sites.wp.odu.edu\/geneticsspring2023\/wp-json\/wp\/v2\/posts\/199\/revisions"}],"predecessor-version":[{"id":204,"href":"https:\/\/sites.wp.odu.edu\/geneticsspring2023\/wp-json\/wp\/v2\/posts\/199\/revisions\/204"}],"wp:attachment":[{"href":"https:\/\/sites.wp.odu.edu\/geneticsspring2023\/wp-json\/wp\/v2\/media?parent=199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.wp.odu.edu\/geneticsspring2023\/wp-json\/wp\/v2\/categories?post=199"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sites.wp.odu.edu\/geneticsspring2023\/wp-json\/wp\/v2\/tags?post=199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"\"](\"https:\/\/sites.wp.odu.edu\/geneticsspring2023\/wp-content\/uploads\/sites\/32818\/2023\/04\/image.png\")
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