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TrEMBL

TrEMBL,即凝血因子XI,全稱為血漿促凝血酶原激酶前體,常見簡稱FXI,也被稱作PTA,是人體血漿中存在的絲氨酸蛋白酶原,以同源二聚體的形式存在于血液循環中,是機體凝血過程的重要組成部分,能推動凝血相關物質的生成,進而助力血栓形成、維持正常的凝血平衡,其活性發揮需經相關凝血因子激活,激活后可進一步啟動后續的凝血相關反應。該蛋白異常會引發凝血因子XI缺乏癥,也叫C型血友病、羅森塔爾綜合征,患者在外傷、手術時易出現出血癥狀,蛋白水平異常升高則會增加靜脈血栓、缺血性腦梗塞等血栓性疾病的發病風險。目前針對該蛋白的藥物研發聚焦于抗凝與止血兩大方向,歐洲已有兩款凝血因子XI濃縮劑用于臨床有限治療,低分子抑制劑Asundexian等靶向抑制劑處于臨床研究階段,這類藥物有望在降低出血風險的同時實現抗凝效果,新鮮冰凍血漿仍是目前臨床常用的應急止血手段。

熱銷產品

Recombinant Macaca mulatta Coagulation factor XI (Active) (CSB-MP5433MOW)

驗證數據

CSB-MP5433MOW

(Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.

CSB-MP5433MOW

Activity
Measured by its binding ability in a functional ELISA. Immobilized Macaca mulatta F11 at 2 μg/ml can bind Anti-F11 recombinant antibody (CSB-RA007916MA1HU). The EC50 is 0.5654-0.6444 ng/mL.

CSB-MP5433MOW

Activity
Measured by its ability to cleave the fluorogenic peptide substrate, t-butyloxycarbonyl-Ile-Glu-Gly-Arg-7-amido-4-methylcoumarin (Boc-IEGR-AMC). The specific activity is >150 pmol/min/μg.

CSB-MP5433MOW

The purity of TrEMBL was greater than 95% as determined by SEC-HPLC

TrEMBL Proteins

TrEMBL Proteins for Macaca mulatta (Rhesus macaque)