How does the eukaryotic ribosomal small subunit recognize the start codon on the mRNA?
◦ It binds an Met-tRNA to the first AUG codon it encounters.
◦ It performs an ATP hydrolysis within the small subunit once it encounters a Met-tRNA already bound to the AUG.
◦ It binds an Met-tRNA to the first AUG codon after the Kozak sequence.
◦ It wraps the mRNA strand to bring initiation enhancer proteins into the vicinity of the start codon.
◦ It undergoes a conformational charge that recruits other proteins when it hydrogens bonds to the correct tri-nucleotide sequence.