further purification of the factor yields a preparation that contains one major polypeptide with a molecular weight of approximately 59,000 , this factor enhances the binding of globin mrna to 40 s ribosomal subunits in the presence of eif-2 , eif-3 , eif-4a , and either eif-4b or eif-4f and has been designated eif-4g .
C0058989
eif-4f
C0058990
eif-4g