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

Gills and booklungs, Give detailed structure of gills,book lungs

Give detailed structure of gills,book lungs

Removal of impurities in water, Many common methods are employed for the re...

Many common methods are employed for the removal of impurities from water. Some of them are: Sedimentation Filtration Reverse osmosis Electro dialysis Aeration

Explain stress and psychosocial tension in lifestyle risk, Explain Stress a...

Explain Stress and Psychosocial Tension in lifestyle risk factors? Stress and psychosocial tension are other lifestyle factors in initiating coronary artery disease and precipi

Plant cell wall react when it is placed in hypotonic medium, How does the p...

How does the plant cell wall react when it is placed under hypotonic medium? Ans) The plant cell wall (the covering of the cell outside to the cell membrane) is made of cellulos

Response to cold - responses of plants to stress, Response to Cold - Respon...

Response to Cold - Responses of Plants to Stress Let us first see what happen to a plant when it is exposed to a cold climate with temperatures below 0°C. If the temperature i

Epithelial Cells, What are all teh parts of a simple ciliated columnar epit...

What are all teh parts of a simple ciliated columnar epithilial cell?

How are gametes formed in the pteridophyte life cycle, Q. How are gametes f...

Q. How are gametes formed in the pteridophyte life cycle, by mitosis or meiosis? What is the type of meiosis that occurs in pteridophytes? In pteridophytes gametes are made by

Define historical example of virulence, Define Historical example of virule...

Define Historical example of virulence? The "classical dogma" of epidemiologists was that pathogens all the time evolve in the direction of lower virulence, eventually becoming

Define the term functional foods, Define the term Functional Foods? The...

Define the term Functional Foods? The term 'functional food' was born in Japan. Functional foods are actually products formulated with naturally occurring chemicals or a combin

Illustrate chloroplast structure, Q. In which chloroplast structure are chl...

Q. In which chloroplast structure are chlorophyll molecules found? Chlorophyll molecules are placed in an organized manner in order to improve the exposure to light on the thyl

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