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The process of translation first initiates with two complexes that join together. In the first, the mRNA is bound to PABP , w

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The process of translation first initiates with two complexes that join together. In the first, the mRNA is bound to 43s preinitiation complex while the tRNA is bound to small ribosome unit. When the two complexes join, the small ribosome subunit binds the mRNA at the 5' cap and then scans the mRNA until finding the sequence AUG at which point it pauses and the initiator tRNA engages. Finally the large ribosome unit joins.

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AUG act as the initiation site for synthesis of proteins. At this point the process of translation starts.

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