Biology, asked by tufaanexpress, 23 days ago

define chain initiation in forming polypeptide chains​

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Answered by ՏɑɾíƙɑՏօƖɑղƙí
2

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define chain initiation in forming polypeptide chains_??

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(1) Chain initiation: It requires 3 Initiation factors in prokaryotes and 9 Initiation factors in eukaryotes.

  • Binding of mRNA with smaller subunit of ribosomes (30S/40S)

30S sub unit+mRNA 30S-mRNA complex

In eukaryotes, there is formation of 40S-mRNA complex.

  • Binding of 30S-mRNA with tRNA Meth non-formylated methionine is attached with tRNA in eukaryotes and formylated in prokaryotes..

30S-mRNA complex + tRNA Met GTP 30S-mRNA-tRNA Met

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