Miranda S. answered 01/25/20
B.S. in Molecular Biology with 3 years of research experience
Once the 40S ribosomal subunit along with the appropriately charged tRNA has reached the start codon, this complex recruits the 60S subunit to form the fully functional 80S structure. This complex is then able to translate the remainder of the mRNA transcript into a polypeptide.
Let me know if this is what you were looking for!