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home  products  categories  IκBα Protein (I20-31G) Catalog Number Pack Size Price (US) I20-31G-50 50 μg  $195  I20-31G-200 200 μg  $395    15% OFF   Product Description     Data Sheets     Related Products     Description: Recombinant human IkappaBalpha (1-175) was expressed in E. coli cells using an N-terminal GST tag.   Genbank Number: NM_020529   Sequence: 1-175   Expression System: E. coli   Tag: N-terminal GST tag   Species: Human Storage and Stability: Store product at –70oC. For optimal storage, aliquot target into smaller quantities after centrifugation and store at recommended temperature. For most favorable performance, avoid repeated handling and multiple freeze/thaw cycles. Applications: Kinase Assay, Western Blot Molecular Weight: ~46 kDa Gene Aliases: NFKBIA, MAD-3, NFKBI Scientific Background: IκBα is an inhibitor of the NFκB complex and inactivates the NFκB by trapping it in the cytoplasm (1). Phosphorylation of serine residues on the IκB protein by IκB kinases (IKKs) marks it for destruction via the ubiquitination pathway, thereby allowing the activation of the NFκB complex. Synthetic glucocorticoid such as dexamethasone display anti-inflammatory effects by inducing the increased synthesis of the IκB protein thereby inhibiting the activity of the NFκB complex. Overexpression of the IκBα gene in fibroblasts leads to inhibition of production of IL-6, TNF receptor, MMP-1, MMP-3 and MMP-13 (2). References:  1. Auphan, N. Et al: Immunosuppression by glucocorticoids: inhibition of NF-kappa-B activity through induction of I-kappa-B synthesis. Science 270: 286-290, 1995. 2. Bondeson, J. Et al: Adenoviral gene transfer of the endogenous inhibitor IkappaBalpha into human osteoarthritis synovial fibroblasts demonstrates that several matrix metalloproteinases and aggrecanases are nuclear factor-kappaB-dependent. J Rheumatol. 2007 Mar;34(3):523-33.   Purity:  Sample Purity Data. For specific information on a given lot, see related technical data sheet.

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