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產品詳情
  • 產品名稱:重組牛干擾素τ蛋白

  • 產品型號:rOvIFN-τ
  • 產品廠商:KALANG
  • 產品文檔:
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簡單介紹:
重組牛干擾素τ蛋白與其它公司提供的重組蛋白不同,rOvIFN-τ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.重組牛干擾素τ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:

重組牛干擾素τ蛋白

Species Ovine
Accession P56828
GeneID 100144750
Source Yeast
Molecular Weight 重組牛干擾素τ蛋白Approximately 19.9 kDa, a single glycosylated polypeptide chain containing 172 amino acids.
Quantity 2μg/10μg/1000μg
AA Sequence CYLSRKLMLD ARENLKLLDR MNRLSPHSCL QDRKDFGLPQ EMVEGDQLQK DQAFPVLYEM LQQSFNLFYT EHSSAAWDTT LLEQLCTGLQ QQLDHLDTCR GQVMGEEDSE LGNMDPIVTV KKYFQGIYDY LQEKGYSDCA WEIVRVEMMR ALTVSTTLQK RLTKMGGDLN SP
Purity 重組牛干擾素τ蛋白> 97 % by SDS-PAGE and HPLC analyses.
Biological Activity Fully biologically active when compared to IFN-alpha. The specific activity determined by a viral resistance assay is no less than 1.0 × 107 IU/mg.
Physical Appearance Sterile Filtered White lyophilized (freeze-dried) powder.
Formulation Lyophilized from a 0.2 μm filtered concentrated solution in PBS, pH 7.4.
Endotoxin 重組牛干擾素τ蛋白Less than 0.1 EU/μg of rOvIFN-τ as determined by LAL method.
Reconstitution 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.
重組牛干擾素τ蛋白
SDS-PAGE
Reference 1. Clayette P, Martin M, Dereuddre-Bosquet N, et al. 1999. Pathol Biol (Paris), 47: 553-9.
2. Tekin S, Ealy AD, Wang SZ, et al. 2000. J Interferon Cytokine Res, 20: 1001-5.
3. Tennakoon DK, Smith R, Stewart MD, et al. 2001. J Interferon Cytokine Res, 21: 785-92.
4. Ezashi TandRoberts RM. 2004. Endocrinology, 145: 4452-60.
5. Asselin E, Lacroix D, Fortier MA. 1997. Mol Cell Endocrinol, 132: 117-26.
Background IFN-τ is a new class of type I IFN that is secreted by the trophoblast and is the signal for maternal recognition of pregnancy in sheep. IFN-τ has potent immunosuppressive and antiviral activities similar to other type I IFN but is less cytotoxic than IFN-α/β. The current investigation concerns the effect of recombinant ovine IFN-tau (rOvIFN-τ) on the modulation of MHC class I and II expression on cloned mouse cerebrovascular endothelial (CVE) cells. IFN-tau induced tyrosine phosphorylation of Stat1 and up regulated the expression of MHC class I on CVE. One proposed action by which type I IFN reduce the relapse rate in MS is via interference with IFN-γ-induced MHC class II expression. IFN-τwas shown to down regulate IFN-γ-induced MHC class II expression on CVE and, hence, may be of potential therapeutic value in down regulating inflammation in the central nervous system (CNS). IFN-τdid not upregulate the expression of MHC class II on CVE. IFN-τalso inhibited the replication of Theiler's virus in CVE.

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