Contact System. New Concepts on Activation Mechanisms and Bioregulatory Functions

Contact System. New Concepts on Activation Mechanisms and Bioregulatory Functions
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联系系统。

DOI:
10.1023/a:1013991828598
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发表时间:
2004
期刊:
Biochemistry (Moscow)
影响因子:
--
通讯作者:
E. Neshkova
E. Neshkova
中科院分区:
--
文献类型:
--
作者:
G. Yarovaya;T. B. Blokhina;E. Neshkova

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本文综述了近年来有关接触系统启动血浆蛋白水解系统激活的资料,如凝血、纤溶、激肽生成,以及补体和血管紧张素生成。接触系统的主要蛋白质是因子XII和XI、前激肽释放酶和高分子量激肽原。这些蛋白质及其基因的结构,功能和生物合成的数据。在阴离子表面上的接触系统组件的集合的形成过程中的蛋白质-蛋白质相互作用的详细研究导致了与XIIa因子和激肽释放酶的产生相关的该系统的激活机制的假设。该机制传统上被认为是血液循环级联反应内部途径过程的触发因素。然而,由于缺乏对这种体内激活的直接确认以及缺乏这些组分时不存在止血作用,因此进行了旨在发现其激活的另一种机制和止血系统外的生理作用的研究。由此提出了内皮细胞膜上接触系统活化的新概念。这一概念是基于蛋白质复合物的分离,除了上述蛋白质外,还包括细胞角蛋白1和尿激酶样纤溶酶原激活物和补体q组分的受体。该系统在生物学的船只的作用的想法。我们的一些研究结果上的白细胞弹性蛋白酶的接触系统的关键组成部分的影响。
This review considers the data of recent years concerning the contact system initiating the activation of blood plasma proteolytic systems, such as hemocoagulation, fibrinolysis, kininogenesis, and also complement and angiotensinogenesis. The main proteins of the contact system are the factors XII and XI, prekallikrein, and high-molecular-weight kininogen. The data on the structure, functions, and biosynthesis of these proteins and on their genes are presented. Studies in detail on the protein–protein interactions during formation of the ensemble of the contact system components on the anionic surface resulted in the postulation of the mechanism of activation of this system associated with generation of the XIIa factor and of kallikrein. This mechanism is traditionally considered a trigger of processes for the internal pathway of the hemocoagulating cascade. However, the absence of direct confirmation of such activation in vivo and the absence of hemorrhagia in the deficiency of these components stimulated the studies designed to find another mechanism of their activation and physiological role outside of the hemostasis system. As a result, a new concept on the contact system activation on the endothelial cell membrane was proposed. This concept is based on the isolation of a complex of proteins, which in addition to the above-mentioned proteins includes cytokeratin 1 and the receptors of the urokinase-like plasminogen activator and of the complement q-component. The ideas on the role of this system in the biology of vessels are developed. Some of our findings on the effect of leukocytic elastase on the key components of the contact system are also presented.
DOI: --
发表时间: 1986-03
期刊: The Journal of biological chemistry
影响因子: --
作者:
Akitada Ichinose;Kazuo Fujikawa;Tadakazu SuyamaS
通讯作者: Akitada Ichinose;Kazuo Fujikawa;Tadakazu SuyamaS
DOI: 10.1021/bi00107a001
发表时间: 1991-10-29
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
DAVIE, EW;FUJIKAWA, K;KISIEL, W
通讯作者: KISIEL, W
DOI: --
发表时间: 1987
期刊: The Journal of biological chemistry
影响因子: --
作者:
Retzios,AD;Rosenfeld,R;Schiffman,S
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DOI: 10.1016/s0021-9258(18)53802-3
发表时间: 1993-02
期刊: The Journal of biological chemistry
影响因子: --
作者:
S. Kunapuli;R. D. Dela Cadena;R. Colman
通讯作者: S. Kunapuli;R. D. Dela Cadena;R. Colman
高分子量激肽原在血浆激肽释放酶上的结合位点定位于重链的苹果 1 和苹果 4 结构域。
DOI: 10.1006/abbi.1994.1424
发表时间: 1994
影响因子: 3.9
作者:
Page,JD;You,JL;Harris,RB;Colman,RW
通讯作者: Colman,RW