Eukaryotic translation initiation factor 5B

UniProtKB accession:  P39730

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UniProtKB description:  Plays a role in translation initiation (PubMed:9624054). Translational GTPase that catalyzes the joining of the 40S and 60S subunits to form the 80S initiation complex with the initiator methionine-tRNA in the P-site base paired to the start codon (PubMed:12008673, PubMed:12471154, PubMed:12507428). GTP binding and hydrolysis induces conformational changes in the enzyme that renders it active for productive interactions with the ribosome (PubMed:25478828). The release of the enzyme after formation of the initiation complex is a prerequisite to form elongation-competent ribosomes (PubMed:12507428, PubMed:18976658, PubMed:19029250). Stimulates 20S pre-rRNA cleavage to mature 18S rRNA by PIN-domain endonuclease NOB1 (PubMed:22751017).