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BIOL 239 (290)
Lecture

Set 16.docx

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Department
Biology
Course
BIOL 239
Professor
Christine Dupont
Semester
Winter

Description
Set 16 3 levels at which gene expression is regulated in prokaryotes Some protein will bind to DNA and stop transcription or enhance it4 the role of RNA polymerase in transcription recognition of the promoter35 and 10 TATApribnow box5 the role of RNA polymerase in transcriptionSigma escorts polymerase10 and 35 bind the sigma and then it leaves after initiationBut not all genes are being transcribed all the time 6 studies of Ecoli metabolismUsed to determine fundamental principles of gene regulation in prokaryotesThe binding of regulatory proteins to DNA target controls transcriptionThese regulatory proteins either inhibit or enhance transcription7 lactose utilization in Ecolinegative regulation Permease brings it into the cell Allolactosemodification of the bond which is broken by Bgalactosidase
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