Cyanide - enzyme-activity control, Biology

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.

Posted Date: 1/17/2013 5:39:04 AM | Location : United States







Related Discussions:- Cyanide - enzyme-activity control, Assignment Help, Ask Question on Cyanide - enzyme-activity control, Get Answer, Expert's Help, Cyanide - enzyme-activity control Discussions

Write discussion on Cyanide - enzyme-activity control
Your posts are moderated
Related Questions

As the name shows, the cytoskeleton is responsible for the supporting of the normal shape of the cell; it also acts as a facilitator for substance transport across the cell and for

Q. Describe Coronary Spasm? Usually spasm develops at the site of subcritical or critical stenoses, but it may also occur in angiographically normal coronary arteries, the so c

When resheathing needles, simple precautions to prevent injuries are to: 1. use only one hand to scoop the cap 2. hold the sheath with a hemostat (suggested but will require

Q. How are gases exchanged in sponges? The gas exchange in sponges happens by diffusion from the exterior to the cells that absorb molecular oxygen and liberate carbon dioxide.

Determine about the Chloroplast One of the most distinguishing features of all eukaryotic plant cells is that in addition to mitochondria, they contain special light harvesting

organism that can not exist in the presence of oxygen ?

What are immunoglobulins? Immunoglobulin is the exchange name given to antibody. Immunoglobulins are complex proteins having an invariable portion and a variable portion and ma

Are there living beings without cells? Viruses are measured the only living beings that do not have cells. Viruses are constitute by genetic material (DNA or RNA) enwrapped by

Q. How does the heart impel the blood? The heart is a muscular organ that contains chambers right ventricle and right atrium right ventricle and and left atrium through which b