Lec40 - Lec40ProkaryoticRegulation BBiology 1222 io022

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Bio022 Biology 1222 Haffie 09/10 Lec 40 Prokaryotic Regulation Before next class, Review this lecture as  needed and look over Section 14.3 in the  text
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Bio022 Biology 1222 Haffie 09/10 RNA processing Prokaryote Eukaryote DNA Transcription Pre-mRNA mRNA Translation Ribosome In Eukaryotes, ribosomes don’t get through nuclear membrane
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Bio022 Biology 1222 Haffie 09/10 Translation in Proks T’scription and  T’lation are  coincident Several RNA polymerases, transcribing a gene from right to left, Transcribing ribosomes from bottom to top. Polymerases are going from left to right. Transcription and translation are simultaneous in prokaryotes
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Bio022 Biology 1222 Haffie 09/10 lac Induction Lac expression Time
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Bio022 Biology 1222 Haffie 09/10 lacY DNA Lac repressor Regulatory gene lacI Transcription initiation site Promoter Operator β -Galactosidase lacZ lac operon Permease Transacetylase Transcription termination site lacA lac  Operon LacZ- Galactosidase- breaks lactose into its component parts, glucose and
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Lec40 - Lec40ProkaryoticRegulation BBiology 1222 io022

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