C8696
Cathepsin D from human liver
lyophilized powder, ≥250 units/mg protein (E1%/280)
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About This Item
CAS Number:
MDL number:
UNSPSC Code:
12352204
NACRES:
NA.32
form
lyophilized powder
Quality Level
specific activity
≥250 units/mg protein (E1%/280)
mol wt
~45 kDa
color
white
UniProt accession no.
storage temp.
−20°C
Gene Information
human ... CTSD(1509)
General description
Cathepsin D is an aspartic protease, which is located in lysosomes. It is involved in protein catabolism and maintains hormone and antigen processing. Cathepsin D is implicated in neoplasia and neurodegenerative changes. It regulates lysosomal proteolysis and endogenous fibrinolysis.
Application
Cathepsin D from human liver has been used:
- in β-secretase activity assay
- for enzymatic degradation of amyloid β 1-42
- in microinjection of human foreskin fibroblasts
Biochem/physiol Actions
Cathepsin D is an endosomal-lysosomal aspartic protease implicated in breast cancer metastasis and Alzheimer′s disease. Lysosomal release of cathepsin D has been found to precede cytochrome c release and loss of membrane potential in apoptotic human foreskin fibroblasts. Cathepsin D levels in PC12 cells increase 12 to 24 hours after apoptosis is induced.
Other Notes
Contains α, β and γ isoenzymes as observed by isoelectric-focusing.
Unit Definition
One unit will produce an increase in A280 of 1.0 in 30 min at pH 3.3 at 37 °C measured as TCA-soluble products using acid-denatured hemoglobin as substrate (1 cm light path).
Physical form
Powder containing sodium phosphate buffer salt.
inhibitor
related product
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Regulatory Information
常规特殊物品
Certificates of Analysis (COA)
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Aspartic Proteinases Physiology and Pathology (1995)
Platelet membrane beta-secretase activity in mild cognitive impairment and conversion to dementia: a longitudinal study
McGuinness B, et al.
Journal of Alzheimer'S Disease, 49(4), 1095-1103 (2016)
Jeane do Nascimento Moraes et al.
The journal of venomous animals and toxins including tropical diseases, 28, e20220002-e20220002 (2022-11-22)
Cathepsin D (CatD) is a lysosomal proteolytic enzyme expressed in almost all tissues and organs. This protease is a multifunctional enzyme responsible for essential biological processes such as cell cycle regulation, differentiation, migration, tissue remodeling, neuronal growth, ovulation, and apoptosis.
Andrea Gilg et al.
Journal of translational medicine, 19(1), 190-190 (2021-05-05)
Endogenous Peptide Inhibitor of CXCR4 (EPI-X4) is a natural antagonist of the CXC chemokine receptor 4 (CXCR4). EPI-X4 is a 16-mer peptide that is released from human serum albumin (HSA) by acidic aspartic proteases such as Cathepsin D and E.
Marie Maynadier et al.
Journal of controlled release : official journal of the Controlled Release Society, 171(2), 251-257 (2013-08-01)
Implication of the intracellular proteolytic activity of Cathepsin D (CathD), a lysosomal aspartyl-protease overexpressed in numerous solid tumors, has been evidenced on tumor growth. Its intracellular inhibition by potent inhibitors such as pepstatin constitutes a relevant but challenging molecular target.
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