3.4.23.16 eIF4GI + H2O perhaps cleavage of eIF4G is an event that contributes to a more efficient translation of the genomic HIV-1 mRNA, proteolysis of eIF4GI inhibits protein synthesis directed by capped mRNAs but allows internal ribosome entry site-driven translation, purified enzyme cleaves at positions 678-679, 681-682 and 1086-1087, separating the three domains of the initiation factor 3.4.23.16 Gag polyprotein + H2O - 3.4.23.16 Gag polyprotein + H2O substrate sites, overview 3.4.23.16 Gag polyprotein + H2O Gag polyprotein with cleavage-site P12-P5/P5'-P12' residues 3.4.23.16 Gag precursor polyprotein + H2O - 3.4.23.16 Gag protein + H2O proteolytic cleavage in the host cell cytoplasm 3.4.23.16 Gag-Pol polyprotein + H2O - 3.4.23.16 Gag-Pol polyprotein + H2O proteolytic cleavage in the host cell cytoplasm 3.4.23.16 Gag-Pol precursor polyprotein + H2O - 3.4.23.16 Gag-pro-pol polyprotein + H2O -