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

Explain the nutritional factors that affecting food choice, Explain the Nut...

Explain the Nutritional Factors that affecting food choice? Food choices made based on sound principles of nutrition will be conducive to good health while carelessness about n

Pluripotent scs:grouping of stem cells, Pluripotent SCs : Characterizing...

Pluripotent SCs : Characterizing more restricted abilities for differentiation.their sources are some celles blastocyst (5-14 days) embroys, so can from over 200 cells types i.e

Photosynthetically active radiation, Photosynthetically Active Radiation ...

Photosynthetically Active Radiation This is usually in direct proportion with the incident solar radiation, you know that tropic$ are probably the best illuminated part of the

Determine the parts of sphygmomanometer, Determine the Parts of sphygmomano...

Determine the Parts of sphygmomanometer Parts of sphygmomanometer consists of: - an inflatable cuff (wrapped around the arm when checking B.P) at vertical height as the hear

Limitation of eia, EIA suffers from following limitations: (i)     ELA s...

EIA suffers from following limitations: (i)     ELA should be undertaken at the policy and planning level rather than at the project level. (ii)   Range of possible alternati

Explain about the thermoplastic extrusion, Explain about the Thermoplastic ...

Explain about the Thermoplastic Extrusion? This is a major technique used for vegetable proteins at present. Thermoplastic extrusion leads to dry fibrous and porous granules or

Show major arthropod classes, Q. How are the three major arthropod classes ...

Q. How are the three major arthropod classes characterized according to the presence of antennae? Crustaceans have two pairs of antennae insects have one pair arachnids don't h

Chlorofluorocarbons cause global problem, In what way do chlorofluorocarbon...

In what way do chlorofluorocarbons (CFCs) cause global problems? Chlorofluorocarbons react with and deplete the ozone in the ozone layer. This permits more ultra-violet light 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