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Essay

Lac operon

Essay specific features

 

Issue:

Science

 

Written by:

Andy R

 

Date added:

March 16, 2016

 

Level:

University

 

Grade:

C

 

No of pages / words:

4 / 1060

 

Was viewed:

9508 times

 

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Essay content:

Lac A codes for transacetylase, which detoxifies certain byproducts of lactose metabolism [1,2]. In addition, there is a Promoter region, the binding site for RNA polymerase, and an Operator region, the binding site for repressor protein. In the present of lactose, it binds to the repressor protein and induces a conformational change that prevents the repressor protein from binding to the Operator...
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As a result, RNA polymerase is able to proceed, and encodes Lac Z, Lac Y and Lac A into ?-galactosidase, permease, and transacetylase, respectively, Figure 1 [3]. Consequently, lactose is metabolized. On the other hand, in the absence of lactose and in the present of glucose, the repressor protein that is coded from Lac I is in its original conformation and able to bind to the Operator...
displayed 300 characters

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