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Lactase (EC 3.2.1.108) is an enzyme produced by many organisms and is essential to the complete digestion of whole milk. It breaks down the sugar lactose into its component parts, galactose and glucose. Lactase is found in the brush border of the small intestine of humans and other mammals.
Printable version; Page information ... Diagram showing the enzymatic hydrolysis of lactose to D-galactose and D-glucose by the action of the enzyme lactase. Date: 31 ...
[24] [25] and, as a result, the mutant enzyme is able to replace the lacZ β-galactosidase. [26] EbgA and LacZ are 50% identical on the DNA level and 33% identical on the amino acid level. [27] The active ebg enzyme is an aggregate of ebgA -gene and ebgC-gene products in a 1:1 ratio with the active form of ebg enzymes being an α4 β4 hetero ...
Lactose intolerance is not an allergy, because it is not an immune response, but rather a sensitivity to dairy caused by a deficiency of lactase enzyme. Milk allergy, occurring in about 2% of the population, is a separate condition, with distinct symptoms that occur when the presence of milk proteins trigger an immune reaction. [15]
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Lactose synthase is an enzyme that generates lactose from glucose and UDP-galactose.. It is classified under EC 2.4.1.22.. It consists of N-acetyllactosamine synthase and alpha-lactalbumin.
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]
Function: lactase is located in the small digestives system of people and other creatures such as mammals. Lactase is the bases of the total absorption of milk. Clinical Significance: People who are lactose intolerant have medicine that can help with the digestion. When you are lactose intolerant you might experience gas, bloating, and pain ...