Enzyme-activity control, Biology

Assignment Help:

Enzyme-activity Control

Availability of the substrate, NADH and nitrate would be an important determinant of the rate of nitrate assimilation. In addition, there are number of substances which are known to cause reversible inactivation of nitrate reductase under reducing condition (figure)

1697_Enzyme-activity Control.png

Figure: regulation of assimilatory nitrate reductase (NR), reversible inactivation of NR by combination with hydroxylamine, cyanide, or superoxide and reversal of this inactivation by blue light in the presence of flavin; inactivation by combination with specific binding proteins or by limited proteoiysis. Enzyme synthesis is regulated by positive effector-nitrate, plastidic factor, light and negative effectors derived from ammonia.


Related Discussions:- Enzyme-activity control

#title., 15 character of protozoa

15 character of protozoa

Role of wter, What is the role of water in metabolism and photosynthesis I

What is the role of water in metabolism and photosynthesis I

Forms of soil water, Forms of Soil Water Gravitational Water or Groun...

Forms of Soil Water Gravitational Water or Ground Water: After a heavy rain or irrigation, much of the water drains or sinks downwards. This is called gravitational water.

A meal consists of grilled trout and mushrooms, A meal consists of grilled ...

A meal consists of grilled trout, potatoes and mushrooms. Explain how each item is ultimately the product of photosynthesis. Trout eat aquatic insects, many of which eat micros

Explain taxonomists as synthesisers, Explain Taxonomists as Synthesisers? ...

Explain Taxonomists as Synthesisers? Your study of the earlier units of taxonomy, in particular its history must have made you aware that the field of taxonomy has changed cons

Chemical energy to be used by the living beings on earth, Q. How is the lig...

Q. How is the light from the sun transformed into chemical energy to be used by the living beings on earth? Light from the sun is converting into chemical energy contained in o

Determinants of vascular tone, The vascular tone increases as the arterial ...

The vascular tone increases as the arterial size decreases. The tone at any time reflects the effects of excitory and inhibitory pathways. Neurotransmitters, physical forces like s

Define maxillofacial prosthodontics, Q. Define Maxillofacial Prosthodontics...

Q. Define Maxillofacial Prosthodontics? Dental implants are now been increasingly used for Maxillofacial Prosthodontics. Maxillofacial Prosthodontics involves the prosthetic re

Effects of environmental disasters, Primary effects 1.      Nuclear con...

Primary effects 1.      Nuclear contamination 2.      Biological contamination 3.      Chemical contamination 4.      Destruction of infrastructure facilities. 5.

Male reproductive disorders-preputial prolapse, Preputial prolapse Thi...

Preputial prolapse This deformity is seen in some of the tropical zebu breeds but is not uncommon in European breeds. Initially, it begins as a temperory eversion of a small p

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