Eukaryotic Translation Initiation Factor 3, Subunit B, also called PRT1 or EIF3-p116, is a protein that in humans is encoded by the EIF3B gene. By searching an EST database, Methot et al.(1997) identified a cDNA encoding a human Prt1 homolog. Asano et al.(1997) demonstrated that the 115-kD component of HeLa cell eIF3 is actually composed of two proteins, p116 (EIF3B) and an unrelated 110-kD protein.
