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Lac operon

Lac operon --> lactose operon

group of adjacent and coordinately controlled genes concerned with the metabolism of lactose in E. Coli. The lac operon was the first example of a group of genes under the control of an operator region to which a lactose repressor binds. When the bacteria are transferred to lactose containing medium, allolactose (which forms by transglycosylation when lactose is present in the cell) binds to the repressor, inhibits the binding of the repressor to the operator and allows transcription of mrna for enzymes involved in galactose metabolism and transport across the membrane (_ galactosidase, galactoside permease and thiogalactoside transacetylase).

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Secondary Sugars(metabolism/sugar/bacteria/Lac Operon)

... I'm studying for the final tomorrow and we are focusing a lot on the lac operon series and some of the metabolic processes of sugars. I know that bacteria cells prefer ...

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by Vulpess
Mon Dec 16, 2013 3:40 am
Forum: Microbiology
Topic: Secondary Sugars(metabolism/sugar/bacteria/Lac Operon)
Replies: 2
Views: 1788


... sequences that are categorized based on acting distance. The lac operon in E.coli is a typical example of a cis-acting element. Promoter sequences that regulate ...

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by nukeman
Thu Mar 28, 2013 2:21 pm
Forum: Molecular Biology
Topic: RNA
Replies: 6
Views: 15680

Lac operon, e.coli expression vectors and biotechnology uses

How can gene regulation and expression be manipulated for designing expression vectors? And as a result, what are their potential biotechnological applications?

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by luna2000
Fri Jan 18, 2013 10:51 pm
Forum: Molecular Biology
Topic: Lac operon, e.coli expression vectors and biotechnology uses
Replies: 1
Views: 1320

Lac operon and bioinformatics

I am trying to incorporate bioinformatics regarding the lac operon. Any ideas as to how? I'm looking at the e. coli cells changing from a glucose medium to ...

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by luna2000
Fri Jan 18, 2013 8:10 pm
Forum: Bioinformatics
Topic: Lac operon and bioinformatics
Replies: 0
Views: 1445


... 3)C or U d)G ------------ 4)U e) I ------------ 5)A or G 5) Lac operon= Imagine that in a e.coli culture that was growing with glucose as its nutrient source ...

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by 2468
Tue Dec 04, 2012 1:11 am
Forum: Molecular Biology
Topic: protiens
Replies: 1
Views: 2062
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