马克斯 (MARCKS) 是一种由蛋白激酶C和-卡尔莫杜林调节的丝交联蛋白质
J H Hartwig1, M Thelen, A Rosen
1Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts.
Nature
|April 16, 1992
概括
蛋白激酶C (PKC) 通过影响细胞骨关键蛋白质 - - 活性蛋白来调节细胞形状. 基化,富含氨酸的C激酶基质 (MARCKS) 蛋白与PKC连接到actin组织,其活性由酸化和calmodulin调节.
科学领域:
- 细胞生物学 细胞生物学
- 生物化学 生物化学
- 分子生物学分子生物学
背景情况:
- 蛋白激酶C (PKC) 激动剂改变细胞形态和行动组织.
- 基化,富含氨酸的C激酶基质 (MARCKS) 是一种特定的PKC基质,参与细胞运动.
- 没有确定PKC和actin组合之间的直接联系.
研究的目的:
- 调查MARCKS在连接PKC信号与actin细胞骨架调节中的作用.
- 为了确定MARCKS是否可以作为PKC,calmodulin和actin之间的桥梁.
主要方法:
- 生物化学试验以评估MARK的F-actin交联活性.
- 研究PKC介导酸化对MARCKS活性的影响.
- 检查 - 卡尔莫杜林结合对MARCKS功能的影响.
主要成果:
- 马克斯被确定为一个有线状 (F) 活性交联蛋白.
- 通过PKC介导的酸化抑制了MARK的actin交联活性.
- 结合 - 芽素也抑制了马克斯的活性.
结论:
- 马克斯 (MARCKS) 作为一种调节的交叉桥,在actin和等离子体膜之间起作用.
- 卡尔莫杜林和酸化对MARCKS活动的调节整合了-卡尔莫杜林和PKC信号通路.
- 这提供了一种调节行动蛋白细胞骨响应细胞信号的机制.
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