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凝血因子X的研究进展 被引量:1

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摘要 凝血因子X(Factor X)是一种维生素K 依赖的丝氨酸蛋白酶原。其基因位于第13号染色体(13q^(34)),含8个外显子和7个内含子,8个外显子分别编码FX 的7个结构功能区。FX 活化为FXa 时,重链N 端Arg_(52)和Ile_(53)之间的肽键被切断,掉下一52氨基酸肽。FⅨa、FⅧa、Ca^(2-)和磷脂复合物,FⅦa、组织因子,Ca^(2+)复合物可激活FX。此外,Russell's 蛇毒(RVV),锯鳞蝰蛇毒(SSVV),肿瘤坏死因子等也可激活FX。FXa 的生理抑制剂主要是抗凝血酶Ⅲ(AT-Ⅲ)、α_1-抗胰蛋白酶(α_1-AT)和α_2-巨球蛋白(α-MG)。FX 活性的检测方法除常用的一期法外,新进展有发色底物法,荧光法、酶联凝固分析法及放免法。FX 活性缺乏或减少见于先天性和获得性缺乏症,FX 活性增高主要见于高凝状态和血栓栓塞性疾病。
出处 《国外医学(输血及血液学分册)》 北大核心 1992年第1期2-4,共3页 Foreign Medical Sciences(Section of Blood Transfusion and Heanatology)
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  • 1Rezaie A R. Kinetics of factor Xa inhibition by recombinant tick anticoagulant peptide: both active site and exosite interactions are required for a slow and tight-binding inhibition mechanism [J]. Biochemistry, 2004, 43( 12): 3368-3375.
  • 2Krupiczoic M A, Scotton C J, Chambers R C. Coagulation signalling following tissue injury: focus on the role of factor Xa [J]. Int J Biochem Cell Biol, 2008, 40(6-7): 1228- 1237.
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  • 6Heine A, Koert U, Klebe G, et al. Understanding binding selectivity toward trypsin and factor Xa: the role of aromatic interactions [J]. Chem Med Chem, 2007, 2(3) : 297- 308.
  • 7Gould W R, Cladera E, Harris M S, etal. Co-crystal structure and inhibition of factor Xa by PD0313052 identifies structurally stabilized active site residues of factor Xa and prothrombinase [J]. Biochemistry, 2005, 44(26): 9280- 9289.
  • 8Kamata K, Kawamoto H, Honma T, et al. Structural basis for chemical inhibition of human blood coagulation factor Xa [J]. Proc Natl Acad Sci USA, 1998, 95(12):6630- 6635.
  • 9Brandstetter H, Kuhne A, Bode W, et al. X ray structure of active site-inhibited clotting factor Xa. Implications for drug design and substrate recognition [J]. J Biol Chem, 1996, 271(47): 29988-29992.
  • 10林肖惠,徐为人,刘鹏,刘冰妮,张士俊,王玉丽,刘巍,汤立达.二氢丹参酮Ⅰ的降血脂作用研究[J].中草药,2008,39(9):1378-1380. 被引量:15

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