Three distinct stages of translation Initiation • Rate limiting step • Requires hydrolysis of ATP and GTP • Results in formation of a complex containing the mRNA, the ribosome and the initiator Met-tRNA A. 5 ' end (Cap) dependent initiation• The initiation complex binds to the 5 ' cap structure and scans in a 5 ' to 3 ' Ene until initiating AUG is encounteredB. Internal ribosome entry Initiation complex binds upstream of the initiation codon
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