Circular trimers of gelatinase B/matrix metalloproteinase-9 constitute a distinct population of functional enzyme molecules differentially regulated by tissue inhibitor of metalloproteinases-1.
Circular trimers of gelatinase B/matrix metalloproteinase-9 constitute a distinct population of functional enzyme molecules differentially regulated by tissue inhibitor of metalloproteinases-1.
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明胶酶 B/基质金属蛋白酶-9 的环状三聚体构成了一组独特的功能酶分子,受金属蛋白酶-1 组织抑制剂的差异调节。
DOI:
10.1042/bj20140418
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Quigley,Jam
中科院分区:
文献类型:
--
作者:
Vandooren,Jennifer;Born,Benjamin;Solomonov,Inna;Zajac,Ewa;Saldova,Radka;Senske,Michael;Ugarte-Berzal,Estefanía;Martens,Erik;VandenSteen,PhilippeE;VanDamme,Jo;Garcia-Pardo,Angeles;Froeyen,Matheus;Deryugina,ElenaI;Quigley,Jam
Gelatinase B/matrix metalloproteinase-9 (MMP-9) (EC 3.4.24.35) cleaves many substrates and is produced by most cell types as a zymogen, proMMP-9, in complex with the tissue inhibitor of metalloproteinases-1 (TIMP-1). Natural proMMP-9 occurs as monomers, homomultimers and heterocomplexes, but our knowledge about the overall structure of proMMP-9 monomers and multimers is limited. We investigated biochemical, biophysical and functional characteristics of zymogen and activated forms of MMP-9 monomers and multimers. In contrast with a conventional notion of a dimeric nature of MMP-9 homomultimers, we demonstrate that these are reduction-sensitive trimers. Based on the information from electrophoresis, AFM and TEM, we generated a 3D structure model of the proMMP-9 trimer. Remarkably, the proMMP-9 trimers possessed a 50-fold higher affinity for TIMP-1 than the monomers.In vivo, this finding was reflected in a higher extent of TIMP-1 inhibition of angiogenesis induced by trimers compared with monomers. Our results show that proMMP-9 trimers constitute a novel structural and functional entity that is differentially regulated by TIMP-1.
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影响因子:
6
作者:
Bekes, Erin M.;Schweighofer, Bernhard;Deryugina, Elena I.
通讯作者:
Deryugina, Elena I.
DOI:
--
发表时间:
2011
期刊:
World Journal of Biological Chemsitry
影响因子:
--
作者:
J. Vandooren;N. Geurts;E. Martens;P. E. Van den Steen;S. D. Jonghe;P. Herdewijn;G. Opdenakker
通讯作者:
G. Opdenakker
影响因子:
5.7
作者:
C. Overall;Georgina S. Butler
通讯作者:
Georgina S. Butler
影响因子:
5.6
作者:
Cha, HJ;Kopetzki, E;Brandstetter, H
通讯作者:
Brandstetter, H
影响因子:
4.8
作者:
M. Olson;M. Bernardo;Martin Pietila;D. Gervasi;M. Tóth;L. Kotra;I. Massova;S. Mobashery;R. Fridman
通讯作者:
R. Fridman