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C8571

Sigma-Aldrich

Cathepsin B from human liver

buffered aqueous solution, ≥1,500 units/mg protein (E1%/280)

Sinonimo/i:

Cathepsin B1

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About This Item

Numero CAS:
Classificazione EC (Enzyme Commission):
Numero MDL:
Codice UNSPSC:
12352200
NACRES:
NA.32

Origine biologica

human liver

Livello qualitativo

Forma fisica

buffered aqueous solution

Attività specifica

≥1,500 units/mg protein (E1%/280)

N° accesso UniProt

Condizioni di spedizione

dry ice

Temperatura di conservazione

−70°C

Informazioni sul gene

human ... CTSB(1508)

Descrizione generale

Cathepsin B gene is mapped to human chromosome 8p23.1. It is a lysosomal cysteine with 252 amino acids distributed in two chains and is homologous to rat liver sequence. It has disc shaped structure with two domains namely the left-hand ′L′ domain at the amino terminal and right hand ′R′ domain at the carboxyl-terminal.

Applicazioni

Cathepsin B from human liver has been used:
  • as a positive control in the screening Cathepsin B inhibitor assay
  • in wall extension (expansin activity) assay
  • in microinjection human foreskin fibroblasts to test its effect on apoptosis induction

Azioni biochim/fisiol

Cathepsin B from human liver is highly expressed in the esophageal adenocarcinoma (EAC). It reduces hepatic inflammation and fibrogenesis and may serve as a potential candidate for treating liver diseases.
Cathepsin B has been found to cleave procaspase 1 and procaspase 11 and to induce apoptosis in digitonin-permeabilized cells. Translocation of cathepsin B from the cytoplasm to the nucleus contributes to bile salt induced apoptosis of rat hepatocytes. Levels of cathepsin B in PC12 cells significantly decrease 12 to 24 hours after apoptosis is induced.

Confezionamento

Package size based on protein content

Definizione di unità

One unit will liberate 1 nanomole of 7-amino-4-methylcoumarin from Z-Arg-Arg 7-amido-4-methylcoumarin per min at pH 6.0 at 40 °C.

Stato fisico

Solution in 50 mM sodium acetate, pH 5.0, with 1 mM EDTA.

Inibitore

N° Catalogo
Descrizione
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Substrato

N° Catalogo
Descrizione
Determinazione del prezzo

Codice della classe di stoccaggio

10 - Combustible liquids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable


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Genome-wide catalogue of chromosomal aberrations in barrett's esophagus and esophageal adenocarcinoma: a high-density single nucleotide polymorphism array analysis
Gu J, et al.
Cancer Prevention Research (Philadelphia, Pa.), 3(9), 1176-1186 (2010)
The refined 2.15 AX-ray crystal structure of human liver cathepsin B: the structural basis for its specificity.
Musil DJ, et al.
The Embo Journal, 10(9), 2321-2330 (1991)
Prevention of free fatty acid-induced hepatic lipotoxicity by 18beta-glycyrrhetinic acid through lysosomal and mitochondrial pathways
Wu X, et al.
Hepatology, 47(6), 1905-1915 (2008)
Cathepsin B inactivation attenuates hepatic injury and fibrosis during cholestasis
Canbay A, et al.
The Journal of Clinical Investigation, 112(2), 152-159 (2003)
Microinjection of cathepsin d induces caspase-dependent apoptosis in fibroblasts
Roberg K, et al.
The American Journal of Pathology, 161(1), 89-96 (2002)

Articoli

Cathepsin B is a lysosomal cysteine proteinase with broad specificity. This protocol uses Nα–CBZ–Arg–Arg–7–amido–4–methylcoumarin as the substrate for fluorometric detection of Cathepsin B activity.

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