Non-protein amino acids, Biology

NON-PROTEIN AMINO ACIDS

Non-protein amino acids are the ones which are not incorporated in proteins but occur freely or in combined state in non-protein substances.

Their number is more than 180.

(i)       Ornithine and Citrulline threonine.

(ii)      Homoserine is intermediate in synthesis of cysteine, methionine and threonine.

(iii)         Diaminopimelic acid is intermediate in synthesis of lysines.

(iv)      D-Alanine and D-Glutamic acid are component of peptidolycan of bacterial wall.

(v)      Gamma Aminobutyric acid or GABA is a synaptic neurotransmitter that causes inhibition by opening chloride channels.

(vi)      A number of antibiotics contain amino acid analogues that prevent protein synthesis, e.g., D-Phenylalanine  in Gramicidin - S

(vii)     Actinomycin - D, an inhibitor of RNA synthesis, contains D-Valine.

Posted Date: 10/9/2012 5:32:58 AM | Location : United States







Related Discussions:- Non-protein amino acids, Assignment Help, Ask Question on Non-protein amino acids, Get Answer, Expert's Help, Non-protein amino acids Discussions

Write discussion on Non-protein amino acids
Your posts are moderated
Related Questions
Q. To which heart chamber does the blood go after leaving the left atrium? What is the valve that separates these compartments? The valve between the left atrium and the left v

Barbiturate, Sedative, Hypnotic or Anxiolytic Intoxication and Withdrawal: This Emergencies related  to  substance abuse may be acute  or chronic. The patient may come  to  th

Which two of the following changes (a - d) usually tend to occur in the plain dwellers when they move to high altitudes (3,500 m or more)? 1. Enhance in red blood cell size 2

what is the excretory organ in protozoa?

What is ancylostomiasis? Ancylostomiasis is a disease caused by Ancylostoma duodenale or Necator americanus, both hookworms belonging to the nematode phylum (roundworms). Ancyl

WHAT IS SYMBIOTIC THEORY. PLEASE EXPLAIN THIS TO ME IN A VERY SIMPLE WAY.

Q. Show Non-Modifiable Risk Factors for cardiovascular disease? Age: Earlier men less than 55 years were more prone but now heart disease has caught up with a younger age-gro

All Solid Semi-Solid Wastes Arising From Human And Animals Activities, Except Human Excreta And Sullage (Liquid Wastes From Bathrooms, Kitchens Etc.) are discarded as useless or un

Explain the Frank Furcal Perforation a) Coronal perforation at the pulpal floor of multirooted tooth. b) Due to excessive deepening at the pulpal floor during access perfora

A mother has brought her 2-week-old infant to the emergency department due to the baby's persistent and increasing jaundice. Blood testing reveals that the infant's unconjugated bi