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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.
describe an operon
Define Mechanism for Copper Absorption? As in the case of other minerals, copper absorption appears to occur by two mechanisms: i) Saturable active mechanism, which operates
example of pisces
A zoologist is investigating a population of squirrels whose coat color is controlled by a single gene whose two alleles (B1 & B2) are codominant. B1B1 individuals are black, B1B2
What is a species? A species is a set of living beings able to cross between themselves generating fertile offspring. This concept though does not apply to individuals of ex
Noise Pollution - Environmental Pollution Noise is unwanted sound or excessively high levels of sound. Noise pollution is not only an annoyance, but at sufficiently high level
flying fish,cuttlefish,silverfish - pisces are correctly matched with taxonomic classification
Q. Can you explain Pneumothorax? Air in the pleural cavity manifests in a number of ways on the CXR, depending on the volume of air and position of the patient. The typical fin
Foods that are frequently incriminated in staphylococcal food poisoning include meat and meat products, poultry and egg products, egg, tuna, chicken, potato and macaroni, bakery pr
why we add some sodium bicarbonate in water?
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