the finding that eif-4a and eif-4b can bind to an mrna ( lacking in secondary structure ) , with essentially the same degree of effectiveness and affinity as would occur for natural mrnas in the presence of eif-4a , eif-4b , and eif-4f , suggests a possible role for eif-4a and eif-4b in both cap-independent and internal initiation .
C0058989
eif-4f
C0058984
eif-4a