纤维素是一种新型蛋白质,它与纤维素结素受体β子单元细胞质域相互作用
W S Argraves1, K Dickerson, W H Burgess
1Biochemistry Laboratory, American Red Cross, Rockville, Maryland 20855.
Cell
|August 25, 1989
概括
研究人员发现了纤维素,一种与纤维素受体相互作用的新型100kD蛋白质. 这种蛋白质可能会调解细胞粘附受体和细胞骨架之间的连接.
科学领域:
- 细胞生物学 细胞生物学
- 蛋白质的生物化学 蛋白质的生物化学
- 分子相互作用分子相互作用.
背景情况:
- 纤维内素受体在细胞粘附和信号传递中起着至关重要的作用.
- 了解与纤维素结素受体相互作用的蛋白质是解读细胞矩阵相互作用的关键.
研究的目的:
- 为了识别和描述与纤维素受体β子单元相互作用的新型蛋白质.
- 研究一种新发现的100kd蛋白在细胞粘附过程中的功能作用.
主要方法:
- 使用纤维素受体β子单元的细胞质域的合成的亲和性染色体.
- 使用原生纤维内素受体和45Ca2+的蛋白质结合试验.
- N-终端氨基酸测序. 氨基酸测序. 在 N-终端氨基酸测序.
- 在纤维菌素上培养的细胞的免疫光染色.
主要成果:
- 一种100kD的蛋白质,称为纤维素,被分离出来,并被证明可以结合纤维素蛋白受体β亚单元.
- 纤维素与纤维素受体的结合在EDTA治疗中是可逆的,这表明了依赖的相互作用.
- 纤维素的N端序列与已知的蛋白质数据库不匹配.
- 免疫光检测显示,纤维素在细胞基质接触部位与纤维素因子受体β子单元共聚.
结论:
- 纤维素是一种新型蛋白质,在体外和体内与纤维素受体相互作用.
- 纤维素可能充当将粘附受体与细胞骨联系起来的调解者.
- 进一步研究纤维素的功能可以阐明细胞粘附和信号传递的机制.
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