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Lac operon
Essay specific features
Written by:
Andy R
Date added:
March 16, 2016
Level:
University
Grade:
C
No of pages / words:
4 / 1060
Was viewed:
9495 times
Rating of current essay:
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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