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C8696

Sigma-Aldrich

Cathepsin D from human liver

lyophilized powder, ≥250 units/mg protein (E1%/280)

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25 μG
305,00 €

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25 μG
305,00 €

About This Item

Numéro CAS:
Numéro de classification (Commission des enzymes):
Numéro MDL:
Code UNSPSC :
12352204
Nomenclature NACRES :
NA.32

305,00 €


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Forme

lyophilized powder

Niveau de qualité

Activité spécifique

≥250 units/mg protein (E1%/280)

Poids mol.

~45 kDa

Couleur

white

Numéro d'accès UniProt

Température de stockage

−20°C

Informations sur le gène

human ... CTSD(1509)

Description générale

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.[1]

Application

Cathepsin D from human liver has been used:
  • in β-secretase activity assay[2]
  • for enzymatic degradation of amyloid β 1-42[3]
  • in microinjection of human foreskin fibroblasts[4]

Actions biochimiques/physiologiques

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.
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.

Autres remarques

Contains α, β and γ isoenzymes as observed by isoelectric-focusing.

Définition de l'unité

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).

Forme physique

Powder containing sodium phosphate buffer salt.

Inhibiteur

Réf. du produit
Description
Tarif

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable


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Consulter la Bibliothèque de documents

Aspartic Proteinases Physiology and Pathology (1995)
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.
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)
Mengjie Ma et al.
Molecules (Basel, Switzerland), 28(13) (2023-07-14)
In this study, cathepsin D was oxidized in vitro with different concentrations of H2O2, and the activity, structure, and extent of myofibrillar protein degradation by oxidized cathepsin D were evaluated. The sulfhydryl content of cathepsin D decreased to 9.20% after
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.

Questions

  1. At what temperature is it shipped?  How to reconstitute it? Is it active or to be activated?

    1 réponse
    1. This product is shipped at ambient temperature. This material is lyophilized from a solution containing sodium phosphate, pH 6.5. It may be reconstituted in approximately 80 ul water per 25 ug vial. Activation is not necessary.

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