Description

Cystatin D is a low molecular weight protein belonging to the cystatin superfamily of cysteine protease inhibitors. This compound is of significant interest in biochemical and pharmaceutical research due to its specific inhibitory activity against cathepsins, which are implicated in various physiological and pathological processes. It is primarily utilized by researchers and developers in the fields of biomedical research, diagnostic assay development, and therapeutic target investigation.

Application

• Biochemical Research: Used as a specific inhibitor to study the role of cysteine proteases like cathepsin S, L, and H in cellular pathways.
• Diagnostic Development: Serves as a key component or standard in developing enzymatic activity assays and diagnostic kits.
• Pharmaceutical R&D: Investigated as a potential therapeutic agent or target for conditions involving protease dysregulation, such as inflammatory diseases, cancer metastasis, and neurological disorders.
• Enzyme Kinetics Studies: Employed to determine inhibition constants (Ki) and understand enzyme-inhibitor interaction mechanisms.
• Cell Culture & Tissue Engineering: Used to modulate protease activity in experimental models to study tissue remodeling and degradation.
• Reference Standard: Acts as a high-purity calibrant or control in quality control laboratories for related biopharmaceutical products.

Basic Information

Product Name	Cystatin D
CAS No.	142539-78-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	CST5; Cystatin-5; Cystatin D (Human); Cystatin-5 Precursor; Cysteine Protease Inhibitor 5; MGC125316; MGC125317
EINECS	Contact for details

Quality Control

Our Cystatin D is produced and handled under stringent quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity assessment and biological activity assays, to ensure consistency and compliance with research-grade specifications. A comprehensive Certificate of Analysis (COA) detailing purity, potency, and test results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below. This product is hygroscopic (moisture-sensitive). Allow the vial to reach room temperature in a desiccator before opening to prevent condensation and moisture uptake.

Specification

Item	Specification
Appearance	White to off-white lyophilized powder
Identification (HPLC/MS)	Conforms
Purity (HPLC)	≥ 95%
Biological Activity	≥ 90% of stated activity
Endotoxin Level	< 1.0 EU/μg
Water Content (KF)	< 5.0 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.