The cell-penetrating peptide octa-arginine is a potent inhibitor of proteasome activities

Oligo-arginines are cell-penetrating peptides and find use as carriers for transportation of various membrane-impermeable biopharmaceuticals into target cells. We have found that oligo-arginines of a length of 4–10 amino acids, but especially (Arg) 8, are able to inhibit the major intracellular prot...

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