In general, the IF2 protein plays a crucial role in coordinating many steps of translation initiation, including the binding of mRNA and fMet-tRNA to the start codon, the joining of sub-units, and the activation of GTPase.
The IF2 protein is key to orchestrating several stages of translation initiation, including mRNA attachment, fMet-tRNA incorporation, sub-unit formation, and GTPase stimulation.