Truncation and non-natural amino acid substitution studies on HTLV-I protease hexapeptidic inhibitors

The culprit behind adult T-cell leukemia, myelopathy/tropical paraparesis, and a plethora of inflammatory diseases is the human T-cell leukemia virus type 1 (HTLV-I). We recently unveiled a potent hexapeptidic HTLV-I protease inhibitor, KNI-10166, composed mostly of natural amino acid residues. Herein, we report the derivation of potent tetrapeptidic inhibitor KNI-10516, possessing only non-natural amino acid residues.

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