Abstract

Self-quenched fluorogenic substrates for proteolytic enzymes have been prepared by alkylation of thiol groups in reduced bovine serum albumin with iodoacet-amidofluorescein or iodoacetamidoeosin. Substrates immobilized by adsorption onto nitrocellulose membranes or by incorporation into agarose gel slabs are suitable for fluorescence zymography after electrophoretic separation of catalytically active proteases, including cathepsin D.

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