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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.
MENDEL'S EXPERIMENTAL PLANT Mendel selected common garden pea ( Pisum sativum ) for his experiments, because:- (i) The pea is small and annual plant. Duration of lif
#phyletic lineage ..
Phylum Sarcomastigophora Locomotory organelles - flagella, pseudopodia or both types, usually with one type of nucleus; typically no spore formation, sexual reproduction thro
Q. Why is the uricotelic excretion essential for reptile and avian embryos? In birds and reptiles the excretory system is uricotelic since uric acid is less toxic, insoluble an
What is consanguineal marriage? Why is the appearing of genetic disease more probable in the offspring of a consanguineal marriage? The Consanguineal marriage is the marriage b
For homework, I had to prove that a certain catalyst was a protein, then tell how I would purify the protein, then tell how I would clone a human chromosomal region that contains t
Variety of Locomotion A number of animals are sendentary, remaining attached to some substratum. These animals may move parts of their body but this does not result in the mov
Explain Flucytosine Flucytosine (Ancobon) - Potentially lethal, dose-related bone mar- row toxicity, colitis and rapid development of resistance when used alone limit the use o
why is it known as middle man
Nitrogen Fixation As we have said before, atmospheric nitrogen cannot be used by plants or animals. It has to be first fixed. The term nitrogen fixation refers to the oxidatio
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