Characterization of the Monomeric and Dimeric Forms of Latent and Active Matrix Metalloproteinase-9

Characterization of the Monomeric and Dimeric Forms of Latent and Active Matrix Metalloproteinase-9
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潜在和活性基质金属蛋白酶 9 的单体和二聚体形式的表征

DOI:
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发表时间:
2000
影响因子:
4.8
通讯作者:
R. Fridman
R. Fridman
中科院分区:
生物学2区
文献类型:
--
作者:
M. Olson;M. Bernardo;Martin Pietila;D. Gervasi;M. Tóth;L. Kotra;I. Massova;S. Mobashery;R. Fridman

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基质金属蛋白酶-9(MMP9)是基质金属蛋白酶家族的一员,在正常和病理条件下与细胞外基质的降解有关。基质金属蛋白酶-9的一个独特特征是它能够以单体和二硫键结合的二聚体形式存在。然而,关于潜伏的(前-基质金属蛋白酶-9)和活性的基质金属蛋白酶-9二聚体的性质的信息很少。在这里,我们报道了对单聚体和二聚体的纯化,以及它们的生化性质以及它们与金属蛋白酶组织抑制因子(TIMP)-1和TIMP-2的相互作用。凝胶过滤和表面等离子共振分析表明,前-基质金属蛋白酶-9单体和二聚体以相似的亲和力结合TIMP-1。相反,TIMP-2只与活性形式结合。激活后,两种形式的酶在合成肽底物的周转中表现出相同的催化能力,其与TIMPs的抑制开始和被抑制的络合物解离的动力学参数相似。基质分解蛋白1激活单体和二聚体的动力学分析表明,基质分解酶1激活单体和二聚体的Km值在纳摩尔范围内,相对较低的kCat值(分别为1.9×10−3和4.1×10−4s−1)与基质分解酶1激活单体形式的较快速率(1个数量级)一致。这表明基质分解蛋白1激活基质分解酶1的活性的限速事件可能是基质分解酶1在水解区附近的必需的缓慢展开。
Matrix metalloproteinase-9 (MMP-9) is a member of the MMP family that has been associated with degradation of the extracellular matrix in normal and pathological conditions. A unique characteristic of MMP-9 is its ability to exist in a monomeric and a disulfide-bonded dimeric form. However, there exists a paucity of information on the properties of the latent (pro-MMP-9) and active MMP-9 dimer. Here we report the purification to homogeneity of the monomer and dimer forms of pro-MMP-9 and the characterization of their biochemical properties and interactions with tissue inhibitor of metalloproteinase (TIMP)-1 and TIMP-2. Gel filtration and surface plasmon resonance analyses demonstrated that the pro-MMP-9 monomeric and dimeric forms bind TIMP-1 with similar affinities. In contrast, TIMP-2 binds only to the active forms. After activation, the two enzyme forms exhibited equal catalytic competence in the turnover of a synthetic peptide substrate with comparable kinetic parameters for the onset of inhibition with TIMPs and for dissociation of the inhibited complexes. Kinetic analyses of the activation of monomeric and dimeric pro-MMP-9 by stromelysin 1 revealed K m values in the nanomolar range and relative low k catvalues (1.9 × 10−3 and 4.1 × 10−4s−1, for the monomer and dimer, respectively) consistent with a faster rate (1 order of magnitude) of activation of the monomeric form by stromelysin 1. This suggests that the rate-limiting event in the activation of pro-MMP-9 may be a requisite slow unfolding of pro-MMP-9 near the site of the hydrolytic cleavage by stromelysin 1.
DOI: 10.1016/s0021-9258(18)42873-6
发表时间: 1992-03
期刊: The Journal of biological chemistry
影响因子: --
作者:
G. Goldberg;A. Strongin;I. Collier;L. T. Genrich;B. Marmer
通讯作者: G. Goldberg;A. Strongin;I. Collier;L. T. Genrich;B. Marmer
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DOI: 10.1038/ki.1993.26
发表时间: 1993
影响因子: 19.6
作者:
Strongin,AY;Collier,IE;Krasnov,PA;Genrich,LT;Marmer,BL;Goldberg,GI
通讯作者: Goldberg,GI
DOI: --
发表时间: 1998-02
期刊: The American journal of pathology
影响因子: --
作者:
Geeta Sehgal;Jin Hua;E. Bernhard;I. Sehgal;Timothy C. Thompson;R. Muschel
通讯作者: Geeta Sehgal;Jin Hua;E. Bernhard;I. Sehgal;Timothy C. Thompson;R. Muschel
DOI: 10.1016/s0021-9258(19)49547-1
发表时间: 1992-08
期刊: The Journal of biological chemistry
影响因子: --
作者:
Rafael Fridman;Thomas R. Fuerst;Robert E. Bird;Matti Hoyhtya;M. Oelkuct;Sue Kraus;D. Komarek
通讯作者: Rafael Fridman;Thomas R. Fuerst;Robert E. Bird;Matti Hoyhtya;M. Oelkuct;Sue Kraus;D. Komarek
DOI: 10.1073/pnas.86.21.8207
发表时间: 1989-11-01
影响因子: 11.1
作者:
GOLDBERG, GI;MARMER, BL;HE, CS
通讯作者: HE, CS