Component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is involved in protein synthesis of a specialized repertoire of mRNAs and, together with other initiation factors, stimulates binding of mRNA and methionyl-tRNAi to the 40S ribosome. The eIF-3 complex specifically targets and initiates translation of a subset of mRNAs involved in cell proliferation. Component of the eukaryotic translation initiation factor 3 (eIF-3) complex (Potential) (PubMed:9849901, PubMed:15548739). Binds to the translation initiation factors TIF3C1 and TIF3H1 (PubMed:15548739, PubMed:9849901). Interacts with CSN1 (Potential) (PubMed:9849901). Associates with the CSN (COP9 signalosome) complex (PubMed:9849901). Binds to the translation initiation factors TIF3C1 and TIF3H1 (PubMed:15548739, PubMed:9849901). Belongs to the eIF-3 subunit C family.