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. Probable component of the eukaryotic translation initiation factor 3 (eIF-3) complex. Is not part of the eIF-3 core complex, with which it is associated in substochiometric amounts. Marked reduction in binding of the eIF-3 core complex to 40S ribosomes. Present with 17900 molecules/cell in log phase SD medium. Belongs to the eIF-3 subunit J family.