科斯塔尔2是一种新型基因素相关蛋白质,存在于黑信号通路中的新型蛋白质
1Department of Developmental Biology, Howard Hughes Medical Institute, Stanford University School of Medicine, California 94305-5427, USA.
Cell
|July 25, 1997
概括
一种与素相关的蛋白质Costal2在Hedgehog (HH) 信号响应细胞中积聚. 这种蛋白与Cubitus interruptus (CI) 转录因子相关联,这表明Costal2直接调节HH通路活性.
科学领域:
- 发育生物学 发展生物学
- 细胞信号传递 细胞信号传递
- 分子遗传学 分子遗传学
背景情况:
- 刺 (HH) 信号传递对于细胞命运的确定和发育中的动物的组织模式至关重要.
- 在Drosophila中,HH信号传递涉及一个抑制器复合体,包括Costal2,蛋白激酶A和Patched.
- 转录因子Cubitus interruptus (CI) 和激酶Fused积极调节HH目标基因转录.
研究的目的:
- 为了调查Costal2在子信号通路中的作用和定位.
- 确定Costal2与转录因子Cubitus interruptus (CI) 之间的关系.
主要方法:
- 免疫组织化学分析以确定Costal2蛋白位址.
- 同免疫沉试验用于评估蛋白质与蛋白质之间的相互作用.
- 生物化学分化研究Costal2的细胞区.
主要成果:
- Costal2,一种与素相关的蛋白质,在响应HH信号的细胞中优先表达.
- Costal2定位在细胞质中,并与微管结合.
- 在一个大型蛋白质复合体内,Cubitus interruptus (CI) 与Costal2相关.
结论:
- Costal2在对冲路径调节中发挥着重要作用.
- Costal2与CI的关联表明在HH通路内控制CI活动的直接机制.
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