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The lactose operon (lac operon) is an operon required for the transport and metabolism of lactose in E. coli and many other enteric bacteria.Although glucose is the preferred carbon source for most enteric bacteria, the lac operon allows for the effective digestion of lactose when glucose is not available through the activity of β-galactosidase. [1]
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They discovered that the mechanism that controlled the metabolic "switching" function was a two-part control mechanism on the lac operon. When lactose is present in the cell the enzyme β-galactosidase is produced to convert lactose into glucose or galactose. When lactose is absent in the cell the lac repressor inhibits the production of the ...
Textbooks published by NCERT are prescribed by the Central Board of Secondary Education (CBSE) [8] from classes I to XII, with exceptions for a few subjects, especially for the Class 10 and 12 Board Examination. Around 19 school boards from 14 states have adopted or adapted the books. [11]
The new Danish coat of arms (right) features a bear, the symbol of Greenland, and ram, the symbol of the Faroe Islands, more prominently. Kongehuset
Galactoside permease is a protein coded by the lacY gene of the lac operon, and is found bound to the membrane of a cell for the purpose of binding galactoside molecules that have been solubilized. The protein is part of a system whose main function is to catalyze the accumulation and transport of lactose and other beta-galactosides across the ...
For example, a 1-cup serving of a low-sodium vegetable soup contains 549 milligrams of potassium (12% of the Daily Value). Related: What Happens to Your Body When You Eat Potassium.
DuBose was taken off the field on a stretcher following a delay that lasted 12 minutes. The medical team on the field cut off Dolphins receiver Grant Dubose’s jersey. This injury, caused by a ...