Biological Information
Background Information:
Cathepsin D is a major intracellular member of the mammalian aspartic proteinase family. The enzyme is thought to be in the normal degradation of intracellular and extracellular proteins. It has also been suggested that the enzyme plays a role in the generation of biologically active peptides, the processing of exogenous antigens and the b-amyloid precursor protein in Alzheimer’s disease. Overexpression of cathepsin D in human breast cancers is associated with higher risk of relapse and metastasis. Moreover, recent interest in this enzyme arose from the discovery of its possible role in the execution of cell death and the progression of neoplastic diseases.
Family:
Protease
Sub Family:
Pepsin
Class:
Aspartic Peptidase
Protein Name:
Cathepsin D
Uniprot Number:
P07339
Protein Aliases:
ceroid-lipofuscinosis, neuronal 10
Gene Name:
CTSD
Gene ID:
1509
Gene Aliases:
CLN10
Accession Number:
NM_001909
Organism:
Human
Construct Details:
Endogenous
Assay Information
Assay Type:
Biochemical
Assay Sub Type:
Enzymatic
Functional Mode:
Antagonist
Detection Method:
Spectrofluorimetry
Measured Response:
Fluorescence
Testing Information
Procedure Summary:
Human liver cathepsin D is used. Test compound or vehicle is preincubated with 190 mU/ml enzyme‡ in modified acetate buffer pH 4.0 for 15 minutes at 37°C. The reaction is initiated by addition of 20 μM MOCAc-Gly-Lys-Pro-Ile-Leu-Phe-Phe-Arg-Leu-Lys(Dnp)-D-Arg NH2 for another 10 minute incubation period. Determination of the amount of MOCAc formed is read spectrofluorimetrically at 340 nm/400. Compounds are screened at 10 μM.
Substrate:
20 µM MOCAc-Gly-Lys-Pro-Ile-Leu-Phe-Phe-Arg-Leu-Lys(Dnp)-D-Arg-NH₂
Incubation:
10 min at 37°C
Control Inhibitor:
Pepstatin
Criteria For Significance:
≥ 50% of max stimulation or inhibition
Test Concentration / Dose:
Suggested concentration for initial testing is 10 uM
Test Sample Requirements:
Minimum for 1) Screen: 25 μl of 10 mM stock -OR- 1 mg (pre-weighed). 2) Dose Response: 60 μl of 10 mM stock -OR- 1 mg (pre-weighed).
Minimum Order Quantity:
2
Turnaround Time
Standard:
15 Business Days
Reference Compound Data
Clinical Relevance
Therapeutic Area:
Oncology/Immuno-Oncology
Additional Information
Brand:
LeadHunter
Testing Location:
Taiwan - Taipei
RELATED SOLUTIONS