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

Biodeterioration, is paper broken down by microorganisms

is paper broken down by microorganisms

What is a food chain?, What is a food chain? The food chain is not bran...

What is a food chain? The food chain is not branched it is linear sequence in which a living being serves as food for another, starting with the producers and going up to the d

What is multi-gated equilibrium radionuclide angiography, Q. What is Multi-...

Q. What is Multi-gated equilibrium radionuclide angiography? Multi-gated equilibrium radionuclide angiography (MUGA) is a very accurate method in measuring ejection fraction. R

Effects of smoking on oesophagitis, Q. Effects of smoking on oesophagitis? ...

Q. Effects of smoking on oesophagitis? 1. A decrease in pyloric sphincter pressure which may predispose an individual to duodenal ulcer. 2. An alteration in the nature of ga

Carbohydrates, CARBOHYDR A TES Carbohydrate = hydrate of carbo...

CARBOHYDR A TES Carbohydrate = hydrate of carbon. Hydroxyl group present. Aldehyde group or keto group may present. Carbohydrates are polyhydroxy aldehydes

Enrobed meat products, E n r o b e d Meat Products Enrobing/coati...

E n r o b e d Meat Products Enrobing/coating of meat products with edible materials enhances the acceptability and creation of variety to meat products. Whole egg liquid,

Umbilical and inguinal hernia, Umbilical Hernia: An umbilical hernia  ...

Umbilical Hernia: An umbilical hernia  is protrusion of a portion of intestine  through  the umbilical ring (an opening in the muscular area of the abdomen where the umbilical

Define the meaning of open kettles, Define the meaning of Open Kettles? ...

Define the meaning of Open Kettles? A number of foods can be satisfactorily concentrated in open kettles which are heated by steam. This is the case for jellies and jams, toma

Mollusca, Order of classification

Order of classification

Spermeiogenesis / spermetoleosis, SPERMEIOGENESI S / SPERMETOLEOSIS It...

SPERMEIOGENESI S / SPERMETOLEOSIS It is the gradual differentiation of a stationary rounded and undifferentiated spermatid into an active and motile sperm. The spermatids f

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