Cyanide - enzyme-activity control, Biology

Assignment Help:

Cyanide - Enzyme-activity Control

Plants generate cyanide from cyanogenic glucides and histidines. Ethylene biosynthesis is also accompanied by cyanide production. Nitrate reductase can occur in reduced form following its interaction with NADH in the absence of nitrate. The reduced form of the enzyme has the ability to combine with cyanide forming enzyme-CN complex which is enzymatically inactive. Nitrate, blue light or oxygen oxidise the enzyme-CN complex releasing cyanide.

The cyanide free enzyme regains its activity. Hydroxyl amine or superoxide inactivates the enzyme which on exposure to blue light gets converted to active form. It is observed that plants grown in blue light are higher in protein contents. Blue light regulation of nitrate reductase activity may be one of the primary factors responsible for higher protein synthesis.


Related Discussions:- Cyanide - enzyme-activity control

Which is utilized by other reactions, The breakdown of ATP releases energy,...

The breakdown of ATP releases energy, which is utilized by other reactions that require energy. Identify other examples where inventions have utilized a similar principle, where en

Explain in brief about the diseases sleep paralysis, Explain in brief about...

Explain in brief about the diseases Sleep paralysis This is an episode of paralysis in the transition between wakefulness and sleep. The period of paralysis is usually brief bu

Results-pulmonary valve disease, Results :  In critical pulmonary stenosis...

Results :  In critical pulmonary stenosis in infancy, surgical mortality is 6 per cent. For children and adults with isolated pulmonary valve stenosis, the mortality approaches 0

Point out research findings related to cancer prevention, Point out Researc...

Point out Research Findings Related to Cancer Prevention? In this section we shall discuss some of the research findings related to cancer prevention. Many of the natural, canc

Skeleton, what are the biological significance of skeleton

what are the biological significance of skeleton

Point and non-point sources, Point and Non-Point Sources The discharg...

Point and Non-Point Sources The discharge of effluents in receiving water body at a specific site are referred to a point sources in contrast to the inflow of pollutants in a

Explain about rna molecules, Explain how early RNA molecules might have bee...

Explain how early RNA molecules might have been able to respond to natural selection. Every RNA molecule might have competed with slightly dissimilar RNA molecules for nucleoti

Define measuring body composition - underwater weighing, Define Techniques ...

Define Techniques for Measuring Body Composition - Underwater weighing? Underwater weighing (densitometry): It applies the Archimedean principle of water displacement by the fu

Define protein as an energy source, Define Protein as an energy source? ...

Define Protein as an energy source? Proteins contribute to the body's energy need. If diet does not furnish enough calories from carbohydrates and fats, proteins are catabolize

Misuse of biology, MISUSE OF BIOLOGY - Biological achievements are used...

MISUSE OF BIOLOGY - Biological achievements are used against human race, e.g. 1 .       Bioweapons anitbiotic resistant infective micro-organism are used in wars. e.g., A

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