662200
Ubiquitinated Protein Enrichment Kit
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About This Item
Código UNSPSC:
41116133
Productos recomendados
uso
kit sufficient for 12.5-25 mg process (lysate)
Nivel de calidad
fabricante / nombre comercial
Calbiochem®
condiciones de almacenamiento
do not freeze
temp. de almacenamiento
2-8°C
Descripción general
A rapid method for isolating ubiquitinated proteins using affinity beads comprised of a GST-fusion protein containing an ubiquitin-associated sequence bound to glutathione-agarose. Useful for the enrichment of polyubiquitinated proteins from cell and tissue lysates of a broad range of species including canine, human, mouse, and yeast. The ubiquitinated proteins can be identified by loading the beads directly onto SDS-PAGE and then immunoblotting with the antibody of choice or Anti-Ubiquitin (Cat. No. 662099). Alternatively, it is possible that the beads can be treated with Isopeptidase T (Cat. No. 419700) to release the proteins from the ubiquitin chains.
A vast majority of short-lived proteins are degraded by the ubiquitin-proteasome pathway. A protein marked for degradation is covalently attached to multiple molecules of ubiquitin, a highly conserved 76-amino acid (8.6 kDa) protein, by a multi-enzymatic system consisting of Ubiquitin-activating (E1), Ubiquitin-conjugating (E2), and the Ubiquitin-ligating (E3) enzymes. The E1 activates a Ubiquitin monomer at its C-terminal cysteine residue to a high-energy thiolester bond which is then transferred to a reactive cysteine residue of the E2 enzyme. The final transfer of ubiquitin to e-amino group of a reactive lysine residue of substrate proteins is brought about by the E3 enzyme. Ubiquitinated protein is then escorted to the 26S proteasome where it undergoes final degradation and the ubiquitin is released and recycled. A family of proteins including Rad23, contain two ubiquitin-associated domains that bind ubiquitinated cellular proteins and translocate them to the proteasome. Ubiquitinated proteins can be enriched using affinity beads comprised of a GST-fusion protein containing this ubiquitin-associated sequence conjugated to glutathione-agarose.
Componentes
Polyubiquitin Affinity Beads, Control Glutathione-Agarose Beads, Control Lysate, and a user protocol.
Advertencia
Toxicity: Multiple Toxicity Values, refer to MSDS (O)
Almacenamiento y estabilidad
Upon arrival store entire contents of the kit at 4°C.
Otras notas
Chen, L. and Madura, K. 2002. Mol. Cell Biol. 22, 4902.
Chen, L., et al. 2001. EMBO Rep.2, 933.
Chen, L., et al. 2001. EMBO Rep.2, 933.
Información legal
Sold under license of PCT Application wo 03/049,602.
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
Palabra de señalización
Danger
Frases de peligro
Consejos de prudencia
Clasificaciones de peligro
Acute Tox. 4 Dermal - Aquatic Chronic 3 - Eye Dam. 1 - Repr. 2 - Skin Sens. 1
Código de clase de almacenamiento
10 - Combustible liquids
Certificados de análisis (COA)
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