The eIF3/p116 polyclonal antibody recognizes human eIF3/p116 also known as eukaryotic translation initiation factor 3, subunit 9 eta 116 kD, EIF3 ETA, EIF3 P110, eIF3b, and PRT1. eIF3/p116 is a member of the eukaryotic translation initiation factor 3 family. eIF-3 is the largest of the eIFs and is composed of at least 12 different subunits; eIF3/p116 is one such subunit with an apparent molecular weight of 116 kD. eIF3/p116 is a ubiquitously expressed ribosome protein that binds to the 40s ribosome and promotes the binding of methionyl-tRNA and mRNA. eIF3/p116 has been shown to interact with other subunits of EIF-3, IL-2Rbeta, and TRIP1 protein. The eIF3/p116 antibody has been shown to be useful for Western blotting.