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
中科院分区:
文献类型:
--
作者:
M. Olson;M. Bernardo;Martin Pietila;D. Gervasi;M. Tóth;L. Kotra;I. Massova;S. Mobashery;R. Fridman
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.
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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
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