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Peptide bond formation is catalyzed by peptidyl transferase. The carboxyl end of the amino acid bound to the tRNA in this reaction and in the P site is uncoupled from the tRNA and becomes joined by a peptide bond to the amino set of the amino acid connect to the tRNA in the A site. A protein with peptidyl transferase activity has certainly not been isolated. The reason is now obvious; in E. coli at least, the peptidyl transfers activity is related with part of the 23S rRNA in the vast ribosomal subunit. Alternatively, peptidyl transferase is a ribozyme, a catalytic activity which resides in an RNA molecule.
Where would a predicted silent mutation have to be situated to actually result in a loss-of-function mutation (and potentially lead to the onset of disease)? A. Intron-exon jun
Q. What is an example of positive feedback of the homeostatic regulation? In positive feedback the effect caused by an action stimulates the action even more. This is a rarer m
Q. Describe Lipoprotein? Ans. There is considerable current interest in this lipoprotein, which consists of LDL with an additional apoprotein-apoprotein (a) attached to it
Q. Genetic resources of biodiversity? Genetic diversity or the gene pools are important for promoting and ensuring high agricultural yield. Genetic diversity provides crops wit
Describe the events which lead to the formation of (a) identical twins, (b) fraternal twins. (a) Identical twins are derived from the products of a one zygote which separa
Rabies Rabies, a fatal zoonotic viral disease of dogs, cats, man and other mammals, causes an acute encephalomyelitis. The rabies virus belongs to the genus Lyssavirus in the
Gibberellins - Plant Growth Substances In late 1920's Kurosawa observed that the medium in which the fungus Gibberella had grown could cause the abnormal tallness in rice seed
Explain about the Anorexia Nervosa? Anorexia nervosa, as you have read above, is a psychological eating disorder characterized by somatic delusions that one is too fat despite
Explain the term Intracellular Filaments? Intracellular Filaments : The cell contains fibrous proteins which serve to give the cell its shape and internal organization and fo
Disaccharides can be understood as follows 1.Sugars made up of the two monosaccharides held together by the covalent bond; like sucrose and lactose . 2. Type of sugar (sacch
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