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100 mM PMSF

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 Active Motif's Phenylmethylsulfonyl fluoride (PMSF) is a non-specific inhibitor of serine proteases and the cysteine protease papain (reversible by DTT treatment). PMSF does not inhibit metalloproteases, most cysteine proteases or aspartic proteases. PMSF is provided at a concentration of 100 mM in isopropanol. It is recommended to use a working concentration of 0.1 - 1 mM. Since protease levels may vary among cell and tissue types, it may be necessary to optimize the concentration of inhibitors to use.

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