Fibrinogen-binding properties of the human platelet glycoprotein IIb-=IIIa complex: a study using crossed-radioimmunoelectrophoresis.
Fibrinogen-binding properties of the human platelet glycoprotein IIb-=IIIa complex: a study using crossed-radioimmunoelectrophoresis.
复制标题
人血小板糖蛋白 IIb-=IIIa 复合物的纤维蛋白原结合特性:一项使用交叉放射免疫电泳的研究。
作者:
G. Gogstad;F. Brosstad;M. Krutnes;I. Hagen;N. Solum
Fibrinogen-binding platelet proteins have been examined by crossed-immunoelectrophoresis of solubilized, washed platelets followed by the incubation of the immunoplates with /sup 125/I-fibrinogen and exposure to x-ray films. Incubation with 0.1 mg/ml of /sup 125/I-fibrinogen revealed the binding of fibrinogen to the immunoprecipitates representing the glycoprotein IIb-IIIa complex, factor XIIIa chain, a granule membrane protein termed G4, fibrinogen, and albumin. Only the glycoprotein IIb-IIIa precipitate and the fibrinogen precipitate showed significant binding when the concentration of /sup 125/I-fibrinogen was lowered to 0.01 mg/ml. Thi indicates that the binding of fibrinogen is specific. The binding of /sup 125/I-fibrinogen to the precipitates representing the glycoprotein IIb-IIIa complex, the factor XIIIa chain, and G4, but not to the albumin precipitate, was significantly lowered in the presence of EDTA. This effect of EDTA increased with increasing pH, with no binding at pH 8.7. The results indicate that the glycoprotein IIb-IIIa complex, but not the separate glycoproteins IIb and IIIa, can act as Ca/sup 2 +/ or Mg/sup 2 +/-dependent fibrinogen receptor, under proper physiologic conditions.
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DOI:
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发表时间:
1981
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Niewiarowski,S;Budzynski,AZ;Morinelli,TA;Brudzynski,TM;Stewart,GJ
通讯作者:
Stewart,GJ
DOI:
--
发表时间:
1981
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Kornecki,E;Niewiarowski,S;Morinelli,TA;Kloczewiak,M
通讯作者:
Kloczewiak,M
影响因子:
2.9
作者:
Marguerie,GA;Plow,EF
通讯作者:
Plow,EF
DOI:
--
发表时间:
1980
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Plow,EF;Marguerie,GA
通讯作者:
Marguerie,GA