Explain the elongation of transcription in bacteria.
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Elongation
- A second tRNA charged with an amino acid enters the A –site, this is with the help of elongation factors.
- It pairs with second codon.
- Then the peptide bond is formed between the first and second amino acid.
- This bond formation is catalysed by the enzyme peptidyl transferase.
- During this linkage between the first amino acid and its tRNA is broken, this tRNA is unloaded from P – site and the second at the A –site is pulled with mRNA then this process is known as translocation.
- This results in the third codon shift to the A – site now a tRNA charged with third amino acid binds at the A - site for chain elongation in the 5’ 3’ direction.
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