Active Native Bovine Cathepsin B

• Cat.No.: CTSB-188B

Specification

• Source: bovine tissue
• Species: Bovine
• Form: Frozen
• Bio-activity: >= 10 units per mg protein using Z-RR-pNA as a substrate. One unit is defined as the amount of enzyme that hydrolyzes on umole Z-RR=pNA per minute at 37°C, pH 6.0 in the presence of DTT. Note: one unit defined by Z-RR=pNA equals ~ 20 units defined by Z-RR-betaNA
• Molecular Mass: MW: 22,000-23,000 by SDS PAGE under reducing conditions
• Purity: >= 95% by SDS-PAGE
• Usage: For research use or for use in further manufacturing.
• Quality Control Test: Prepared from tissue collected int the contiguous United Statesfrom animals under 30 months of age at a USDA inspected facility. Animals were inspected ante and post mortem and found free ofinfections diseases.
• Stability: >1 year
• Storage: <=>
• Storage Buffer: 50 mM Na Acetate, pH 5.0 with 1mM EDTA