What is reaction specificity, Biology

Assignment Help:

Reaction specificity

Some  enzymes  catalyze only one  reaction  acting  on  a specific substrate. Example: urease  and  catalase  acts  only  on  urea and  hydrogen peroxide, respectively. This is also called absolute specificity.

Many  enzymes  can  catalyze same type of reactions  (phosphate  transfer, oxidation-reduction, hydrolysis etc.)  in  several  structurally-related compounds. Example: carboxypeptidase  acts on protein chains and removes one amino acid at a time from the C-terminal, irrespective of the nature of zimino acid.

 A substrate caa undergo many reactions but in a specific reaction, an enzyme will catitlyze  only one  of  these reactions.  Example:  citrate  synthase  converts oxaloacetate to citrate in  the presence of acetyl-CoA. But,  in  absence of acetyl-  CoA, oxaloacetate is acted  upon  by  a different enzyme malate  dehydrogenase with the formation of malate.

 


Related Discussions:- What is reaction specificity

How is reproduction done in beings of the class reptilia, How is reproducti...

How is reproduction done in beings of the class Reptilia? These beings reproduce sexually by internal fecundation by means of copulation among male and female individuals. They

What is dengue, What is dengue? Dengue, or dengue fever, is an epidemic...

What is dengue? Dengue, or dengue fever, is an epidemic disease in some countries (for instance, in Brazil), and its most dangerous form is hemorrhagic dengue. It is caused by

Where are blood cells made in the body, Where are blood cells made in the b...

Where are blood cells made in the body? Blood cells are made in the red bone marrow, e.g. in the ribs, sternum or vertebrae.

Male reproductive disorders-blockage of ducts, Blockage of ducts In so...

Blockage of ducts In some bulls there is a blockage of the transport of sperm through the epidydimis usually caused by a congenital non-patency of some part of the vasa effere

Define complete assessment for dietary management - surgery, Define Complet...

Define Complete Assessment for Dietary Management during Surgery? A complete assessment must include: Physical examination (anthropornetric measurements such as ideal/us

Agro industrial-mineral biofortification of plants, Mineral biofortificatio...

Mineral biofortification of plants One sustainable agricultural approach to reducing the mineral deficiencies in livestock animals is to enrich major staple food crops (rice,

Enumerate about the colour vision defects, Enumerate about the colour visio...

Enumerate about the colour vision defects Acquired colour vision defects can occur afkr damage to the optic nerve or macula and in some cases, because of blue blindness in old

Morphogenetic processes, Morphogenetic Processes We discussed earlier...

Morphogenetic Processes We discussed earlier the process through which a fertilized egg assumes the shape of a ball or a sheet of cells around a cavity, called blastula. Cons

Explain how a person can be dead, A person is declared to be dead upon the ...

A person is declared to be dead upon the irreversible cessation of spontaneous body functions; brain activity, or blood circulation and respiration. However, only about 1% of a per

Release of microspores, Release of Microspores Up to the tetrad stage...

Release of Microspores Up to the tetrad stage, there is no cellulosic wall around the microspores. As you will come to know in the next unit, a unique feature of the pollen i

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