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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.
[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 ...
Lactase enzymes similar to those produced in the small intestines of humans are produced industrially by fungi of the genus Aspergillus. The enzyme, β-galactosidase, is available in tablet form in a variety of doses, in many countries without a prescription. It functions well only in high-acid environments, such as that found in the human gut ...
Lactase persistence or lactose tolerance is the continued activity of the lactase enzyme in adulthood, allowing the digestion of lactose in milk. In most mammals , the activity of the enzyme is dramatically reduced after weaning . [ 1 ]
Stem cells from the human body exist in both adults and embryos. Harvesting them from fetal tissues isn’t really how things are done anymore. Stem cells are essentially any cells that haven’t ...
The majority of humans actually follow this protocol as well, and down-regulate lactase production around 3-5 years of age. Interestingly, though, the majority of caucasians, mainly those from northern european background, continue to have elevated lactase activity all the way into adulthood, and so they exhibit “lactase persistence”.
Let it grow! Sarah Silverman talks about her experience dealing with body hair — from her unibrow to her mustache to her hairy arms — in The Sarah Silverman Podcast, which the star posted to ...
Historically, body hair has been associated with virility, power and attractiveness but the removal of body hair by men is not just a modern-day fad.In fact, hair removal has a traceable history that stretches as far back as ancient Egypt, where men and women would shave their bodies, heads and faces and priests ritualistically shaved their bodies every three days.