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

Determine the categories of latent squint, Determine the categories of Late...

Determine the categories of Latent squint Latent squint category there are five subtypes: 1)  Esophoria 2)  Exophoria 3)  Hypophoria 4)  Hyperphoria 5)  Cyclopho

Can you explain balloon valvuloplasty, Q. Can you explain Balloon Valvulopl...

Q. Can you explain Balloon Valvuloplasty? Whenever feasible valvuloplasty is the treatment modality of choice. One has to make sure that the valve is suitable and expertise to

Enzymes, Biological catalysts à speed up chemical reactions in the body wit...

Biological catalysts à speed up chemical reactions in the body without being consumed in the process Reduce the activation energy needed for reactants to reach the transit

Larval forms - porifera, Larval forms - Porifera In the majority of sp...

Larval forms - Porifera In the majority of sponges the larval stage develops in the body of the parent. The larva is generally at the blastula stage of development. Figure dis

How can the formation of sperm cells from germ cells, Indicating the name a...

Indicating the name and respective ploidy of each involved cell how can the formation of sperm cells from germ cells be described? The formation of sperm cells, or spermatogene

Research to improve health care delivery, Research to Improve Health Care D...

Research to Improve Health Care Delivery: Today, much  of health  care  delivery  system remains  imitative  and intuitive rather than innovative,  creative or  scientific in

What are cilia and flagella, What are cilia and flagella? Cilia and fla...

What are cilia and flagella? Cilia and flagella are structures found in prokaryotes as well in eukaryotic cells. They play defense, nutrition and movement roles for the cell. I

Catecholamines, Catecholamines increase activation of Ca 2+ via beta-adren...

Catecholamines increase activation of Ca 2+ via beta-adrenergic receptors and the adenyl cyclase system. Dopamine has both alpha and beta and dopaminergic effects.  Its beta ef

What do you mean by chromosome number, Q. What do you mean by Chromosome Nu...

Q. What do you mean by Chromosome Number? We are generally aware that the number of chromosomes in each cell of all individuals of a single species is constant. ,It is also est

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