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

Peacock, exoskeleton of peacock

exoskeleton of peacock

Define exocytosis , A cell frequently wants to secrete larger molecule...

A cell frequently wants to secrete larger molecules than can be accommodated through the transport systems dealt with in Topic E3. Exocytoses get to the movement of proteins out of

Define primary motor cortex corticospinal interneuron a, Define Primary mot...

Define Primary motor cortex corticospinal interneuron A Primary motor cortex (M1) corticospinal interneuron A that produces action potentials during movements of the big toe of

To test the gas given off when seeds germinate, To test the gas given off w...

To test the gas given off when seeds germinate Place some mustard seeds in a flask with some damp cotton wool, in the apparatus shown in the diagram, and permit them to germina

What do we mean by the term isomer, What do we mean by  the term isomer? ...

What do we mean by  the term isomer? Existence of different compounds having  same molecular form  but dtfferent structural  forms  are isomers. Monosaccharides exhibit a varie

Define a liquid diet, Define a liquid diet A liquid diet is the one whi...

Define a liquid diet A liquid diet is the one which having of foods that can be served in liquid or strained forms at room temperature. These are usually prescribed after certa

Define significance of plants and animals on human life, Define Significanc...

Define Significance and Impact of Plants and Animals on Human Life? Plants and animals both have a great significance and unparalleled impact on human life. Most of our needs a

Protozoan, what are the phylum of kingdom protozoan

what are the phylum of kingdom protozoan

Define thin layer chromatography, Define Thin Layer Chromatography? Thi...

Define Thin Layer Chromatography? This is an improvement over paper chromatography and uses thin layers of slurried absorbents like silica gel, alumina, cellulose, Kieselguhr,

Algae, what are the characteristics of algae?

what are the characteristics of algae?

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