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  • 產品名稱:重組人MHC I類多肽相關序列蛋白

  • 產品型號:rHuMIC-B
  • 產品廠商:KALANG
  • 產品文檔:
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簡單介紹:
重組人MHC I類多肽相關序列蛋白與其它公司提供的重組蛋白不同,rHuMIC-B蛋白產品為采用CFS的無細胞麥胚蛋白合成系統表達出來的重組蛋白,可表達出對細胞有毒性、易被蛋白酶降解的蛋白;并獲得具有良好的可溶性,并有翻譯后修飾、從而部分具有功能的蛋白.同時獨有的全自動蛋白純化技術則簡便高效,將蛋白純化過程中對蛋白的損傷降低到*小程度.重組人MHC I類多肽相關序列蛋白(全長序列)產品可用于Western Blot驗證、抗體制備、蛋白檢測、ELISA等試驗中.
詳情介紹:

重組人MHC I類多肽相關序列蛋白

Species Human
Source Escherichia coli.
Molecular Weight Approximately 32.8 kDa, a single non-glycosylated polypeptide chain containing 287 amino acids.
Quantity 10μg/50μg/1000μg
AA Sequence 重組人MHC I類多肽相關序列蛋白AEPHSLRYNL MVLSQDESVQ SGFLAEGHLD GQPFLRYDRQ KRRAKPQGQW AEDVLGAKTW DTETEDLTEN GQDLRRTLTH IKDQKGGLHS LQEIRVCEIH EDSSTRGSRH FYYDGELFLS QNLETQESTV PQSSRAQTLA MNVTNFWKED AMKTKTHYRA MQADCLQKLQ RYLKSGVAIR RTVPPMVNVT CSEVSEGNIT VTCRASSFYP RNITLTWRQD GVSLSHNTQQ WGDVLPDGNG TYQTWVATRI RQGEEQRFTC YMEHSGNHGT HPVPSGKVLV LQSQRTD
Purity > 95 % by SDS-PAGE and HPLC analyses.
Biological Activity 重組人MHC I類多肽相關序列蛋白Fully biologically active when compared to standard. The specific activity is determined by binding MICB antibody in ELISA.
Physical Appearance Sterile Filtered White lyophilized (freeze-dried) powder.
Formulation Lyophilized from a 0.2 μm filtered concentrated solution in 20 mM Tris, 150 mM NaCl, pH 8.0.
Endotoxin Less than 1 EU/μg of rHuMIC-B as determined by LAL method.
Reconstitution 重組人MHC I類多肽相關序列蛋白We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1 % BSA to a concentration of 0.1-1.0 mg/ml. Stock solutions should be apportioned into working aliquots and stored at ≤ -20 °C. Further dilutions should be made in appropriate buffered solutions.
Storage This lyophilized preparation is stable at 2-8 °C, but should be kept at -20 °C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8 °C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20 °C to -70 °C. Avoid repeated freeze/thaw cycles.
重組人MHC I類多肽相關序列蛋白
Reference 1. Komatsu-Wakui M, Tokunaga K, Ishikawa Y, et al. 1999. Immunogenetics, 49: 620-8.
2. Holmes MA, Li P, Petersdorf EW, et al. 2002. J Immunol, 169: 1395-400.
3. Gambelunghe G, Falorni A, Ghaderi M, et al. 1999. J Clin Endocrinol Metab, 84: 3701-7.
Background MIC-B (MHC class I chain-related gene B) is a single-pass type I member protein. It is widely expressed in many, but not all, epithelial tumors of lung, breast, kidney, ovary, prostate and colon. In addition to this, it is produced by hepatocellular carcinomas, which is only in tumor cells but not in surrounding non-cancerous tissue and can be induced by bacterial and viral infections. MIC-B shares 85% amino acid identity with MIC-A and they are distantly related to the MHC class I proteins. Because they possess three extracellular Ig-like domains, but unlike classical MHC class I molecules, they do not form a heterodimer with beta2 microglobulin, but bind as a monomer to a KLRK1/NKG2D that is an activating receptor expressed on NK cells, NKT cells, γδ T cells, and CD8+ αβ T cells. Recognition of MIC-B by NKG2D results in the activation of cytolytic activity and/or cytokine production by these effector cells. MIC-B recognition plays an important role in tumor surveillance, viral infections, and autoimmune diseases.

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