Recombinant I-TAC/CXCL11, Human

• Catalog Number: orb1494810
• Category: Proteins
• Description: I-TAC (Interferon-inducible T-cell α Chemoattractant), also known as CXCL11, is a chemokine belonging to the CXCL subfamily. Along with Interferon-γ induced Protein 10 kDa and Monokine Induced by Interferon-γ, I-TAC is strongly up-regulated by Interferon-γ and binds to the G-protein coupled receptor CXCR3. The expression of CXCR3 is associated with Th1-mediated immune responses and mediates chemotaxis of Th1 cells. I-TAC induces, maintains, and amplifies the inflammatory reactions, and sustains chronic immune responses against self-antigens. Although CXCR3 was thought to be the exclusive receptor of I-TAC initially, more evidence has shown that I-TAC can also bind to CXCR4 and CXCR7, and that I-TAC plays important roles in tumor development and angiostasis. Recombinant human I-TAC/CXCL11 (rhI-TAC) produced in E.coli is a single non-glycosylated polypeptide chain containing 74 amino acids. A fully biologically active molecule, rhI-TAC has a molecular mass of 8.4 kDa analyzed by reducing SDS-PAGE and is obtained by proprietary chromatographic techniques at GenScript.
• Form/Appearance: Sterile Filtered White lyophilized (freeze-dried) powder.
• MW: 8.4 kDa, observed by reducing SDS-PAGE.
• Protein Sequence: MFPMFKRGR CLCIGPGVKA VKVADIEKAS IMYPSNNCDK IEVIITLKEN KGQRCLNPKS KQARLIIKKV ERKNF
• Source: Escherichia coli.
• Biological Activity: ED50 400 units/mg.
• Endotoxins: < 0.2 EU/μg, determined by LAL method.
• Storage: Lyophilized recombinant human I-TAC/CXCL11 (rhI-TAC) remains stable up to 6 months at -80°C from date of receipt. Upon reconstitution, rhI-TAC remains stable up to 2 weeks at 4°C or up to 3 months at -20°C.
• Buffer/Preservatives: Lyophilized after extensive dialysis against PBS.
• Alternative names: ITAC, CXCL11
• Note: For research use only
• Application notes: Reconstituted in ddH2O at 100 μg/mL.
• Expiration Date: 6 months from date of receipt.