what other function the initiator codon performs in addition to initiating translation
Answers
Other than initiating translation, initiator codon AUG codes for protein methionine .
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▶️ Initiation
✏ Initiation of translation occurs at 5’end of m RNA.
✏ During initiation mRNA first binds to the small subunit of ribosome in the presence of initiation factors.
✏ The start codon is AUG it codes for methionine in eukaryotic initiation site and formyl methionine in prokaryotic initiation.
✏ A tRNA charged with methionine and pair with initiation codon, now the large ribosomal sub unit bind to the small sub unit to complete the initiation complex.
✏ The large sub unit has two binding sites for tRNA namely the amino acyl tRNA binding site ( A–Site ) and peptidyl site ( P–Site ).
✏ The initiating tRNA is found at the P- site and all other tRNA s first bind to the A–Site and then shift to the P–site.