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

Evaluating inducible ischaemia after revascularisation, Q. Evaluating Induc...

Q. Evaluating Inducible Ischaemia after revascularisation? Most early treadmill stress tests are performed either at discharge or within two weeks of an MI ard terminated with

Is it possible x chromosome of women come from father, Is it possible that ...

Is it possible that an X chromosome of a woman can have come from her father? It isn't only possible that an X chromosome of a woman is from her father, it is certain. Each wom

Enzyme synthesis, Enzyme Synthesis Nitrate assimilating system in gene...

Enzyme Synthesis Nitrate assimilating system in general is known to show increase in nitrate uptake system and nitrate reductase system in the presence of nitrate. In other wo

Define recommended dietary allowance for folate (rda), Define Recommended D...

Define Recommended Dietary Allowance for Folate (RDA)? Folate requirements are the intake levels necessary to prevent deficiency with clinical symptoms. The requirements are ex

Name the various test batteries, Name the various Test batteries Test ...

Name the various Test batteries Test batteries typically assess the following domains: General cognitive ability Language ability Visuoperceptual and constructi

Morphological changes, Morphological changes Aquatic plants produce di...

Morphological changes Aquatic plants produce different kinds of leaves and produce aerenchyma (tissues with air gaps) where there be a need to do so. Also, a thick cuticle on

Procedure for spore staining in a given bacterial culture, Explain Procedur...

Explain Procedure for Spore Staining in a Given Bacterial Culture Carry out the exercise following the steps enumerated herewith 1. Take a clean, non-greasy slide. Prepare b

Explain some effect of inadequate nutrition, Explain some Effect of Inadequ...

Explain some Effect of Inadequate nutrition? Inadequate nutrition ranks as one of the major problems of old age. Various factors which may be responsible for the change in one

Acid rain, what are the two main pollutants that contribute to acid rain

what are the two main pollutants that contribute to acid rain

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