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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.
Define Antioxidant Action of Polyphenols? The properties of Polyphenols due to which they have been identified to act as antioxidant is because they: - act as termi
Q. Can you explain Non-restrictive ventricular septal defect? In non-restrictive VSD PA pressures are elevated hence VSD gradient is low. Non-restrictive VSD is larger in s
Q. Dietary approach for pectic ulcer? Let us now move on to understand the dietary approach. We shall begin with the nutrient requirements of the patients. However before we ta
Q What are the hyphae and the mycelium of pluricellular fungi? The major structures of pluricellular fungi are the hyphae threadlike filaments made of contiguous uni or multinu
Question Write a short note on the following - 1 Plastids 2 Phagocytosis 3 Ribosomal subunits 4 Microfilaments 5 Cell cycle control 6 Tight junctions 7 W
What are DNA ligases? How do these enzymes participate in the recombinant DNA technology? DNA ligases are enzymes specialized in tying the complementary DNA chains that produce
Q. What are the plant cell vacuoles? And what are their functions? And what is the covering membrane of the vacuoles called? Plant cell vacuoles are cell structures delimited b
Each ventricle has an inflow part beginning just in front of the corresponding atrioventricular orifice and running forwards to the left towards the apex of the heart. The cavity t
Chlorophyll is the pigment in the green plants which absorbs solar energy. chlorophyll a - It is a green photosynthetic pigment common to all the photosynthetic organisms.
R e troviral method: A retrovirus is a virus that carries its genetic material in the form of RNA rather than DNA. In this method retroviruses are used as vectors to transf
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