Define hexokinase, Biology

Assignment Help:

Hexokinase, that catalyzes the first irreversible step of glycolysis, is inhibited by glucose 6-phosphate.   Thus  when  PFK  is  inhibited and  fructose  6-phosphate builds  up and so does glucose  6-phosphate  due to these two metabolites  are in equilibrium  by phosphoglucoisomerase. Hexokinase inhibition then reinforces the inhibition at the PFK step. At first sight this seems commonly as it is usually the first irreversible step of a pathway (the committed step) that is the major control step. On this basis, it may appear in which hexokinase should be the main control enzyme not PFK.  Furthermore,   glucose 6-phosphate the product of the hexokinase reaction can also feed into glycogen synthesis or the pentose phosphate pathway. Thus the first irreversible step which is exclusive to glycolysis is which catalyzed by PFK and therefore this is the main control step.

 


Related Discussions:- Define hexokinase

Relationship between the ovulation and menstrual cycle, Q. What is the rela...

Q. What is the relationship between the ovulation and menstrual cycle? Ovulation is the releasing of the female gamete from the ovary and Ovulation is a periodical event that o

Skeletons of radiolarians, Skeletons of radiolarians The skeletons of ...

Skeletons of radiolarians The skeletons of radiolarians and foraminiferans form a primary constituent of ocean bottoms where they form 30% or more of the sediment. It is calle

Proteins of animal origin - fish, Proteins of Animal Origin - Fish Fish...

Proteins of Animal Origin - Fish Fish: The edible portion is skeletal muscles of the body. Even though the skeletal muscles of different animals are basically similar, fish spe

Explain briefly about the nutrition, Explain briefly about the Nutrition? ...

Explain briefly about the Nutrition? This unit covers the scope of advanced nutrition. It begins with some definitions and basic concepts and briefly traces the history of nutr

Define the water activity - microbial survival and growth, Define the Water...

Define the Water activity - Microbial Survival? It is the amount of water available to the organism. In general, requirement for water activity is more for bacteria (minimum 0.

Transplantation, Transplantation - It is implanting of a living or p...

Transplantation - It is implanting of a living or preserved tissue or organ from one site to another side in the same individual or from one individual called donor to recip

Posterior leaflet-technique of operation, Posterior Leaflet: In the poste...

Posterior Leaflet: In the posterior leaflet a quadrangular excision of the sector involved in the prolapse is done. This may be up to 15-20 per cent of the leaflet. The remaining

Define major divisions & representing species of gymnosperm, What are the m...

What are the major divisions and representing species of the gymnosperms? This group of plants can be separated into conifers (pine, sequoia, cypress), that have flowers called

Explain food borne toxic infections, Q. Explain Food borne toxic infections...

Q. Explain Food borne toxic infections? Ans. The food borne toxic infections, you may recall reading earlier, are caused by the ingestion of a large numbers of ent

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