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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.
Q. What is low - density lipoprotein receptor pathway? Ans. The increasing cellular free cholesterol generated regulates the activities of two enzymes that are of crucial
Explain the term Ageing? Ageing in human being is of a multifunctional origin and there is a programmed senescence (ageing) of the cells in the body. The genetic make-up of an
wich variables are controlled when conducting a phototropism experiment
Explain Lamivudine It is probably the best tolerated of the NRTIs and can be taken once or twice daily. An increase in viral load during treatment with a lamivudine-containing
Q. Water has key participation in organic reactions. What are examples of two types of organic reactions in which water is respectively incorporated or liberated in the products of
Is it possible that an X chromosome of a woman can have come from her father? It isn't only possible that an X chromosome of a woman is from her father, it is certain. Each wom
What is meant by cellular secretion? Cell secretion is the elimination to the exterior of substances formed by the cell (for instance, hormones, mucus, sweat, etc.)
Define Milk as a rich source of protein? A value of 3.5% protein is often considered as an average for milk. Milk protein has traditionally been divided into 2 classes - casein
How is excretion done in fishes? Fishes have a pair of kidneys that filtrate the blood. Bony fishes excrete nitrogen as ammonia, NH 3 , (they are ammoniotelic) and cartilagino
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