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Beschreibung

A cell-permeable, symmetrical bis(acylamino)ketone compound that acts as a potent, selective, reversible inhibitor of cathepsin K (Ki, = 22 nM). Also shown to inhibit cathepsin K in stably transfected CHO cells (IC50 = 134 nM). Reported to bind to cathepsin K and span both the S- and S'- subsites. Inhibits papain (Ki >10 µ,M), trypsin (Ki >50 µ,M), and chymotrypsin (Ki >50 µ,M) only at higher concentrations. Exhibits greater selectivity for cysteine proteases of the papain family (Ki = 340 nM, 890 nM, and 1-3 µ,M for cathepsin L, cathepsin S, and cathepsin B, respectively)., A cell-permeable, symmetrical bis(acylamino)ketone that acts as a potent, selective, and reversible inhibitor of cathepsin K (Ki,app = 22 nM). Shown to bind to cathepsin K and span both the S- and S'-subsites. A poor inhibitor of papain (Ki,app >10 µ,M) but displays greater selectivity towards other proteases of the papain family (Ki,app = 340 nM, 890 nM, and 1.3 µ,M for cathepsin L, cathepsin S, and cathepsin B respectively). Inhibits trypsin and chymotrypsin activities only at higher concentrations (Ki,app >= 50 µ,M).