Explain isozymes, Biology

Assignment Help:

ISOZYMES

Sometimes an  enzyme present  in  the  same  organism is  found  to  have different molecular forms but  catalyzing the  same  reaction. These are called  isozymes. The 1964 Committee  recommended  that  "multiple enzyme forms"  in  a  single species should be known as isozymes. Among many enzymes known to have isozymes, the most  studied  is  lactate  dehydrogenase  (LDffl, which  is  an  important  enzyme  of carbohydrate  metabolism.  This  enzyme  exists  in  five  possible forms  in  most vertebrates. In  fact two basically different types of LDH occur predominantly in the heart and muscle.  The  former consists of  four identical monomers (H). The  latter (muscle LDH) also forms due to the combination of four identical monomers (M) but having  different  amino acid composition,  in  comparison  to the  former. Different combinations  of  H and M  monomers yield  three  additional hybrid enzymes possessing four monomers each. The possible combinations of H and M monomers therefore, produce five  isozymes of LDH. These are:

H4. H3M, H2M2, HM3 and M4

 


Related Discussions:- Explain isozymes

Crown and bridge remover, Crown and bridge remover - Nash\Taylor tempo...

Crown and bridge remover - Nash\Taylor temporary crown remover -morell remover -position the curved tip below the height of contour or at the margin of the crown -Apply seve

Special type of wards, Special type of Wards: Additional  accommodatio...

Special type of Wards: Additional  accommodation or differences  in size and shape of some of  the special type of wards e.g. Intensive Care Ward, Infectious diseases ward and

Explain the salient feature of genetic code, The one aspect which is not a ...

The one aspect which is not a salient feature of genetic code, is its being: 1. Degenerate 2. Ambiguous 3. Universal 4. Specific Ambiguous

The halstead-reitan neuropsychological battery, The halstead-reitan neurops...

The halstead-reitan neuropsychological battery The beginnings of the battery can be traced to the special laboratory established by Halstead in 1935 for the study of neurosurgi

Conditioned reflex , CONDITIONE D REFLEX - Response which is achiev...

CONDITIONE D REFLEX - Response which is achieved by training is conditioned reflex. I. P. Pavlov in 1920 displayed it by experimenting on dog. These are voluntary in

Metabolic alterations and nutritional problems - cancer, Metabolic Alterati...

Metabolic Alterations and the Resultant Nutritional Problems/ Clinical Manifestations Associated With Cancer? Several research studies have shown that malignant growth (cancer)

What are the final energetic products of each krebs cycle, What are the fin...

What are the final energetic products of each round of the Krebs cycle? Where is most part of the utile energy at the end of Krebs cycle found? After each round of the Krebs cy

The structure of leaves, The structure of leaves Borrow a microscope fr...

The structure of leaves Borrow a microscope from another school, a doctor, or a hospital. Study the under- side of leaves and locate the breathing pores or stomata with the two

Endocrine organs, Endocrine Organs Endocrine organs, as explained ear...

Endocrine Organs Endocrine organs, as explained earlier are those organs or tissues, which release chemical substances directly into blood stream. Not like exocrine glands th

How is the nervous system of nematodes organized, How is the nervous system...

How is the nervous system of nematodes organized? Where are the neural chords located in their body? Roundworms have a ganglial nervous system with an anterior neural ring sho

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