在活酵母中可视化的戈尔吉成熟.
Eugene Losev1, Catherine A Reinke, Jennifer Jellen
1Department of Molecular Genetics and Cell Biology, and Institute for Biophysical Dynamics, The University of Chicago, 920 East 58th Street, Chicago, Illinois 60637, USA.
Nature
|May 16, 2006
概括
戈尔吉装置水箱随着时间的推移而成熟,支持水箱成熟模型. 这个过程解释了通过戈尔吉综合体的分泌蛋白质的运输速率.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 戈尔吉装置包括明显的早期 (cis,中间) 和晚期 (trans,TGN) 的水箱.
- 两个模型,稳定的隔间和水箱成熟,解释了戈尔吉结构和货物运输.
- 稳定的隔间模型假定具有囊泡运输的长寿命水箱,而水箱成熟表明短暂的水箱顺序成熟.
研究的目的:
- 直接测试高尔基装置功能的稳定隔间和水箱成熟模型.
- 研究戈尔吉水箱的动态性质及其在蛋白质运输中的作用.
主要方法:
- 在Saccharomyces cerevisiae中利用了三维时间延迟光显微镜.
- 采用脉冲追踪分析来追踪机密货物蛋白质运输.
主要成果:
- 证明了个别的戈尔吉水箱以一致的速度成熟.
- 观察到水槽成熟的速度与分泌蛋白质的运输速度保持一致.
结论:
- 这些发现支持戈尔吉装置组织和功能的水箱成熟模型.
- 储成熟充分解释了通过戈尔吉综合体分泌蛋白质流量的动力学.
相关概念视频
Golgi Apparatus
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Changes in location
The maturing endosome moves along microtubules from the periphery of the cell towards the perinuclear region. This movement of the...
Changes in location
The maturing endosome moves along microtubules from the periphery of the cell towards the perinuclear region. This movement of the...
Golgi Apparatus
Properly folded and assembled proteins are selectively packaged into vesicles that exit the ER. Motor proteins transport these vesicles to the Golgi apparatus for adding modifications that make these proteins functional at their destination.
The Golgi apparatus is a eukaryotic organelle that has a distinctive ribbon-like appearance. It is a primary sorting and dispatch station for cargo arriving from the ER. Newly arriving vesicles enter the cis face of the Golgi, closest to the ER, and are...
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Golgi Matrix Proteins
Golgi matrix proteins are a group of highly dynamic proteins that maintain the stacked structure of Golgi. These proteins adapt to rapid morphological changes of the Golgi during the cell cycle. During cell division, mild proteolysis removes these connections resulting in Golgi unstacking. In The daughter cells, these proteins help reassemble the unstacked Golgi.
One of the first identified Golgi matrix proteins was GM130, a rod-like protein located in the cis-Golgi. Subsequently, many Golgi...
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Transport Across the Golgi
While it is unclear how molecules move between adjacent Golgi cisternae, it is apparent that the molecules move from cis- cisterna, the entry face, to the trans- cisterna, the exit face. Experiments initially suggested vesicles that bud from one cisterna and fuse with the next cisterna to transport proteins between the cisternae. This vesicular transport model describes the Golgi apparatus as a relatively static structure with a unique enzyme composition in each cisterna. Molecules are...
Golgi Apparatus
Properly folded and assembled proteins are selectively packaged into vesicles that exit the ER. Motor proteins transport these vesicles to the Golgi apparatus for adding modifications that make these proteins functional at their destination.
The Golgi apparatus is a eukaryotic organelle that has a distinctive ribbon-like appearance. It is a primary sorting and dispatch station for cargo arriving from the ER. Newly arriving vesicles enter the cis face of the Golgi, closest to the ER, and are...
The Golgi apparatus is a eukaryotic organelle that has a distinctive ribbon-like appearance. It is a primary sorting and dispatch station for cargo arriving from the ER. Newly arriving vesicles enter the cis face of the Golgi, closest to the ER, and are...


