Explain pyruvate kinase, Biology

Assignment Help:

Pyruvate kinase catalyzes the third irreversible move in glycolysis.  It is activated by fructose 1, 6-bisphosphate.  The ATP and amino acid alanine allosterically inhibit the enzyme so which glycolysis slows when supplies of biosynthetic precursors and ATP (indicated by the levels of Ala) are already sufficiently high. Additionally, in a control similar to that for PFK, when the blood glucose concentration is low, glucagon is stimulates and released phosphorylation of the enzyme by a cAMP cascade. This covalent modification inhibits the enzyme so in which glycolysis slows down in times of low blood glucose levels.

 


Related Discussions:- Explain pyruvate kinase

Drug management for gout disease, Q. Drug Management for gout disease? ...

Q. Drug Management for gout disease? Drugs are so effective in lowering the serum mate concentration that rigid restriction of dietary purines is rarely necessary. Uricosurie d

Explain antibacterial activity, Antibacterial activity   Rifaximin reach...

Antibacterial activity   Rifaximin reaches high concentrations in the intestinal tract and is active in vitro against a broad range of enteropathogens, including ETEC, EAEC, Shi

Animals and biomedical uses of biodiversity, Animal products too are widely...

Animal products too are widely used in medicines by traditional societies, and in some urbanized societies that believe in traditional animal-based remedies. Examples of such produ

The cerebrum, The cerebrum is clearly the most interesting part of the brai...

The cerebrum is clearly the most interesting part of the brain from the point of view of cognitive neuroscience. The cerebrum consists of highly symmetrical left and right hemisphe

Sterigmatocystin, These mycotoxins are structurally and biologically relat...

These mycotoxins are structurally and biologically related to the aflatoxins, and like the latter, they cause hepatocarcinogenic activity in animals. Among the organisms that prod

Describe the two kind of fermentation, Q. What are the two kind of fermenta...

Q. What are the two kind of fermentation? What are their complete chemical equations? The two major types of fermentation are alcoholic fermentation and lactic fermentation.

Under which form is nitrogen fixed by living beings, Under which form is ni...

Under which form is nitrogen fixed by living beings? Most living beings cannot use molecular nitrogen to get nitrogen atoms. Producers fix nitrogen mostly from nitrate (NO3-).

Problems with untreated/ammoniated crop residues, Problems with untreated/a...

Problems with untreated/ammoniated crop residues Besides the low energy and protein contents, crop residues generally contain low content of minerals such as Calcium, Phosphor

By which mechanisms pathogenic bacteria cause diseases, Q. What are few me...

Q. What are few mechanisms by which pathogenic bacteria cause diseases? And why is this knowledge important? Pathogenic bacteria have characteristics called as virulence factor

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd