Purified native Human Cathepsin D protein Bioactivity: 300 units/mg -One unit of activity is defined as the amount of enzyme which digests hemoglobin-releasing peptides which are soluble in 10 % TCA. The reaction is measured by an increase of an A280 of 1.0 per 60 minutes at 37o C. Substrate: acid denatured hemoglobin (0.2 % in reaction mixture). Bu er: 0.1 M formate, pH 3.3. Protein Source: Human plasma
Cathepsin D is a protein that in humans is encoded by the CTSD gene. This gene encodes a lysosomal aspartyl protease composed of a dimer of disulfide-linked heavy and light chains, both produced from a single protein precursor. . Description: Human plasma.