translation initiation factor activity IRES-mediated translation initiation factor activity https://github.com/geneontology/go-ontology/issues/30674 A translation initiation factor activity that enables interaction with internal ribosome entry sites (IRESs) located within mRNA, promoting ribosome recruitment and assembly at internal initiation sites and translation initiation independent of the 5' cap structure. rynl molecular_function GO:0160297 2025-08-11T18:54:21Z