BIOLOGY 1A03 Lecture Notes - Lecture 3: Cyclic Adenosine Monophosphate, Conformational Change, Adenylyl Cyclase

• School: McMaster University
• Department: Biology
• Course: BIOLOGY 1A03
• Professor: Lovaye Kajiura

Document Summary

Lactose permease: a transport protein that sits in the bacterial cell membrane and allows for the transport of lactose into the bacterial cells. Beta-galactosidase protein: the cytoplasmically situated bacterial enzyme that cleaves the imported lactose into glucose and galactose. *note: a key advantage in prokaryotes is that groups of related genes with similar functions are clustered together into operons. Operon model: transcribing a whole gene cluster as one unit, functionally related genes cluster together into transcriptional units along chromosome, clusters are coordinated by on-off switch that controls their transcription and this cooirdination is controlled by an operon. Result: transcription can result in one long mrna that can code for many proteins. 1. lacy gene: codes for a lactose permease transport protein which will embed itself in the cell membrane and allow for the import of lactose into the bacterial cell.