PF063

MMP-3, Proenzyme, Human, Recombinant

• Numéro de classification (Commission des enzymes): 3.4.24.17 (BRENDA, IUBMB)
• Code UNSPSC : 12352202
• Nomenclature NACRES : NA.77

Propriétés

• Essai: ≥95% (SDS-PAGE)
• Niveau de qualité: 100
• Forme: lyophilized
• Fabricant/nom de marque: Calbiochem^®
• Conditions de stockage: OK to freeze; avoid repeated freeze/thaw cycles
• Solubilité: water: soluble
• Conditions d'expédition: wet ice
• Température de stockage: −70°C

Description

Description générale

Recombinant, human pro-MMP-3 purified from cell culture supernatant. May be used as a positive control or standard for zymographic analysis, or substrate assay. Requires activation for immunoblotting, prior to use. M.W. 57000/58000.



Matrix metalloproteinases (MMPs) are a family of enzymes that are responsible for the degradation of extracellular matrix components such as collagen, laminin and proteoglycans. In addition to sequence homology, all MMPs share the following characteristics: the catalytic mechanism is dependent upon a zinc ion at the active center, they cleave one or more extracellular matrix components, they are secreted as zymogens which are activated by removal of an approximately 10 kDa segment from the N terminus and they are inhibited by tissue inhibitor of metalloproteinases (TIMP). These enzymes are involved in normal physiological processes such as embryogenesis and tissue remodeling and may play an important role in angiogenesis, arthritis, periodontitis, and metastasis. Matrix metalloproteinase-3 (MMP-3) also known as stromelysin-1 and transin (EC 3.4.24.17) cleaves a number of substrates including cartilage proteoglycan, collagen types II, III, IV, V and IX, fibronectin, laminin, and can activate MMP 1. MMP-3 is secreted as ~57 and ~59 kDa proenzymes and can be activated in vitro by organomercurials (e.g., 4 aminophenylmercuric acetate, APMA) and in vivo by proteases via intermediate forms to a 45 kDa active MMP 3 enzyme. Further autolysis to a ~28 kDa form can also occur. MMP-3 is thought to play an important role in pathophysiological degradation processes associated with conditions such as rheumatoid arthritis and cancer cell invasion.

Application

Immunoblotting (see comments)

Substrate Cleavage Assay (see comments)

Zymography (see comments)

Avertissement

Toxicity: Standard Handling (A)

Forme physique

Lyophilized from 100 mM NaCl, 50 mM HEPES, pH 7.3.

Reconstitution

Following reconstitution, aliquot into siliconized vials and freeze (-70°C).

Remarque sur l'analyse

The activity of proenzyme MMP 3 was measured by substrate cleavage assay using 0.5 mM thiopeptiolide (Ac-Pro-Leu-Gly-S-Leu-Leu-Gly-Oet) as a substrate. The activity was also assessed by degradation of a peptide substrate (DNP-PYAYWMR) using activated MMP-3 as measured by HPLC.

Autres remarques

Proenzyme MMP-3 may be used as a positive control or standard for immunoblotting, zymographic analysis, or substrate cleavage assays. 0.5 μg/lane was used for SDS-PAGE and immunoblotting. For zymography with casein 1μg/lane of Proenzyme MMM-3 or activated MMP-3 was used. Proenzyme MMP-3 can be activated in vitro by incubation in 50 mM Tris, pH 7.5, containing 0.05% Triton-X-100, 5 mM CaCl₂ and 1 mM 4 aminophenyl mercuric acetate (APMA) for 2-4 hours at 37°C. To dissolve APMA, make a 10 mM stock solution in 0.05 M NaOH. Approximately 90% of proenzyme MMP-3 is activated with a 4 hour incubation at 37°C using 1 mM APMA.

Informations légales

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Informations sur la sécurité

• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable