埃克索1和埃克索2蛋白刺激依赖的细胞在上腺胺细胞的透性
1Department of Physiology, University of Liverpool, UK.
Nature
|February 27, 1992
概括
研究人员发现了两个新的蛋白质,Exo1和Exo2,它们调节触发的细胞在上腺胺细胞中的排泄细胞. 与14-3-3蛋白相似的EXO1可能参与蛋白激酶C介导的这一过程的控制.
科学领域:
- 细胞生物学 细胞生物学
- 神经科学是一个神经科学.
- 生物化学 生物化学
背景情况:
- 流入触发激素和神经递质的释放通过许多细胞类型的细胞外.
- 精确的分子机制和在细胞外细胞形成中的作用细胞部位仍然不完全理解.
- 在分泌途径中的细胞内膜融合需要特定的细胞和膜相关蛋白质.
研究的目的:
- 为了确定新型的细胞突变蛋白因子,调节上腺胺细胞的外细胞突变.
- 描述这些新发现的因子的分子性质和潜在的调节作用,称为EXO1和EXO2.
主要方法:
- 利用透细胞测试系统研究调节的细胞外.
- 研究了细胞质蛋白在废弃制剂中恢复细胞外活性方面的作用.
- 通过SDS-聚烯胺凝电泳,鉴定了蛋白质因子的分子质量和序列同质性.
主要成果:
- 确定了两个细胞质蛋白因子,Exo1和Exo2,这些因子调节了上腺胺细胞中细胞的发生.
- Exo1以大约30,000个分子重量的多呈现,并与14-3-3蛋白家族表现出同质性.
- 通过蛋白激酶C激活,EXO1恢复外细胞形成的能力得到了增强.
结论:
- 埃克索1和埃克索2是上腺克罗马芬细胞中依赖的外细胞形成的新型调节剂.
- 埃克索1可能在蛋白质激酶C介导的控制中发挥作用,从而控制触发的外细胞形成.
- 需要进一步的研究来阐明EXO1和EXO2在外细胞机制中的特定功能.
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