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

Plants of estuary, Plants of Estuary The plants of the estuary are of ...

Plants of Estuary The plants of the estuary are of four basic types: Phytoplankton, Marginal marsh vegetation, Mud-flat algae and Epiphytic plants

Population density - biological stress, Population Density - Biological Str...

Population Density - Biological Stress You are aware of what might follow an uncontrolled growth of human population. There will be competition for common consumables and for

Extracellular signals, extracellular signals and their characteristics

extracellular signals and their characteristics

What are the maximum crop yields, What are the Maximum Crop Yields   Mi...

What are the Maximum Crop Yields   Mitscherlich conducted a large number of experiments with different plants, making use of pots 20 cm in diameter and 20 cm in depth. By addin

Medical and nutritional management for pectic ulcer, Q. Medical and Nutriti...

Q. Medical and Nutritional Management for pectic ulcer? To provide physiological rest and support tissue healing, treatment should be based on providing rest to the affected ar

Embryos prom synergids, Embryos Prom Synergids The synergids, which u...

Embryos Prom Synergids The synergids, which usually degenerate prior to or soon after double fertilization, are reported to give rise to embryos in Argentine mexicana, Tamari

Nominalistic species concept, The nominalists deny the existence of Plato's...

The nominalists deny the existence of Plato's "types". For them only individuals exist. Species are man-made artificial abstractions. But naturalists, the biologists who have actua

Differentiate individual atoms true or false, What is the first step normal...

What is the first step normally taken when you look through the oculars? The nuclei of the cheek cells have been stained using a special dye so that they appear purple. What is the

Explain diffrent type of mycotoxins, Q. Explain diffrent type of Mycotoxins...

Q. Explain diffrent type of Mycotoxins? Mycotoxins are secondary metabolites produced by molds on foodstuffs that cause illness or death when ingested by man or animals. The pr

Foods implicated in botulism, The types of foods involved in botulism vary ...

The types of foods involved in botulism vary according to food preservation and eating habits in different regions. Any food that is conducive to outgrowth and toxin production, th

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