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

Structure of hiv, Structure of HIV HIV is a spherical enveloped virus o...

Structure of HIV HIV is a spherical enveloped virus of about 90-120 nm diameter .In nucleocapsid is icosahedral. Its genome consists of a single stranded RNA filament segmented

protraction from hiv , Protraction from HIV  Under the following condi...

Protraction from HIV  Under the following conditions HIV is not transmitted 1) The secretions and body fluids like Saliva, Tears, Sweat, Faeces, and Urine have negligible HIV c

Thyroid gland, THYROID GLAND - It develops from the endoderm of the ...

THYROID GLAND - It develops from the endoderm of the embryo. Th e thyroid gland is the largest endocrine gland located anterior to the thyroid cartilage of the larynx

Define oven - nutritional biochemistry, Define Oven - Nutritional Biochemis...

Define Oven - Nutritional Biochemistry? Oven is a general term used to describe a chamber or enclosed compartment for heating, baking, or roasting food, as in a stove, or for f

Types of neurons, TYPE S OF NEURONS - The neurons are classified on th...

TYPE S OF NEURONS - The neurons are classified on the basis of their structure and function. (A) On the basis of the structure, the neurons are of four types.

Name the element needed to insure the integrity of membranes, In mammalian ...

In mammalian body, this element plays numerous important roles. Try to identify this element with the fewest number of clues. This element is needed to insure the integrity and per

Comparison between metamorphosis in amphibians and insects, Comparison betw...

Comparison between Metamorphosis in Amphibians and Insects You may have realized that the metamorphic process in amphibians and insects show certain fundamental similarity. M

Define a tumbler garden, A tumbler garden Grow several kinds of seeds i...

A tumbler garden Grow several kinds of seeds in 'tumbler gardens'. Every pupil might grow a tumbler garden of his own and keep a day by day pictorial record of the progress of

Bone remodeling, Bone Remodeling Bone remodeling differs from the other...

Bone Remodeling Bone remodeling differs from the other means of bone structure alteration in that osteoblasts and Osteoclasts do not act independently but are coupled and bone

Explain heat preservation - method of food preservation, Explain Heat Prese...

Explain Heat Preservation - Method of Food Preservation? The process of heating was used centuries before its action was understood. Food is heated up or cooked. Heat kills mi

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