Polymerization of Plasminogen Activator Inhibitor-1*
Polymerization of Plasminogen Activator Inhibitor-1*
复制标题
纤溶酶原激活剂抑制剂-1* 的聚合
DOI:
10.1074/jbc.m010631200
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发表时间:
2001
期刊:
影响因子:
--
通讯作者:
D. Lomas
中科院分区:
文献类型:
--
作者:
Aiwu Zhou;R. Faint;P. Charlton;T. Dafforn;R. Carrell;D. Lomas
The activity of the serine proteinase inhibitor (serpin) plasminogen activator inhibitor-1 (PAI-1) is controlled by the intramolecular incorporation of the reactive loop into β-sheet A with the generation of an inactive latent species. Other members of the serpin superfamily can be pathologically inactivated by intermolecular linkage between the reactive loop of one molecule and β-sheet A of a second to form chains of polymers associated with diverse diseases. It has long been believed that PAI-1 is unique among active serpins in that it does not form polymers. We show here that recombinant native and latent PAI-1 spontaneously form polymers in vitro at low pH although with distinctly different electrophoretic patterns of polymerization. The polymers of both the native and latent species differ from the typical loop-A-sheet polymers of other serpins in that they readily dissociate back to their original monomeric form. The findings with PAI-1 are compatible with different mechanisms of linkage, each involving β-strand addition of the reactive loop to s7A in native PAI-1 and to s1C in latent PAI-1. Glycosylated native and latent PAI-1 can also form polymers under similar conditions, which may be of in vivo importance in the low pH environment of the platelet.
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DOI:
--
发表时间:
1985
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Hekman,CM;Loskutoff,DJ
通讯作者:
Loskutoff,DJ
DOI:
10.1074/jbc.270.34.20032
发表时间:
1995
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Manchanda,N;Schwartz,BS
通讯作者:
Schwartz,BS
DOI:
--
发表时间:
1993
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Aulak,KS;Eldering,E;Hack,CE;Lubbers,YP;Harrison,RA;Mast,A;Cicardi,M;Davis3rd,AE
通讯作者:
Davis3rd,AE
影响因子:
2.9
作者:
MAST, AE;ENGHILD, JJ;SALVESEN, G
通讯作者:
SALVESEN, G