PDCD4 inhibits translation initiation by disrupting the EIF4A1-EIF4G interaction and inhibiting EIF4A helicase activity. It regulates JUN kinase activation and downregulates MAP4K1, inhibiting invasion and tumorigenesis. PDCD4 Protein, Human (His) is the recombinant human-derived PDCD4 protein, expressed by E. coli , with C-6*His labeled tag.