戈尔吉膜在线粒分裂过程中被吸收到ER中并从ER中重新出现
K J Zaal1, C L Smith, R S Polishchuk
1Cell Biology and Metabolism Branch, National Institute of Child Health and Human Development, National Istitutes of Health, Bethesda, Maryland 20892-5430, USA.
Cell
|December 28, 1999
概括
戈尔吉装置在线粒分裂过程中分散到ER中,并通过ER回收路径进行改革,挑战了以前的戈尔吉遗传和起源模型.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 有机体动力学 有机体动力学
背景情况:
- 戈尔吉装置对于蛋白质的修饰和运输至关重要.
- 它在细胞分裂 (线粒分裂) 期间的行为一直受到争议.
- 了解高尔基动力学是细胞分裂和遗传的关键.
研究的目的:
- 为了研究Golgi蛋白在相间细胞中的循环.
- 为了监测Golgi结构在线粒分裂期间的变化.
- 为了阐明基因分裂后的戈尔吉重构的机制.
主要方法:
- 在活细胞中进行定量成像和光漂白.
- 追踪GFP标记的戈尔吉蛋白质.
- 免疫电子显微镜 (免疫电子显微镜).
主要成果:
- 戈尔吉蛋白质在间相中每1.5小时进行一次循环.
- 在线粒分裂过程中,戈尔吉蛋白重新分布到ER中.
- 没有检测到明显的线粒性戈尔吉囊泡;组件与ER合并.
- 戈尔吉转化后的转化需要ER出口.
结论:
- 戈尔吉在线粒分裂过程中分散到ER中.
- 戈尔吉改革依赖于ER出口和回收途径.
- 这定义了戈尔吉生物发生和遗传的新范式.
相关概念视频
Golgi Apparatus
As they leave the Endoplasmic Reticulum (ER), properly folded and assembled proteins are selectively packaged into vesicles. These vesicles are transported by microtubule-based motor proteins and fuse together to form vesicular tubular clusters, subsequently arriving at the Golgi apparatus, a eukaryotic endomembrane organelle that often has a distinctive ribbon-like appearance.The Golgi apparatus is a major sorting and dispatch station for the products of the ER. Newly arriving vesicles enter...
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...
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...
One of the first identified Golgi matrix proteins was GM130, a rod-like protein located in the cis-Golgi. Subsequently, many Golgi...
The Endoplasmic Reticulum
The endoplasmic reticulum or ER makes up for more than half of the membranes in a cell and accounts for 10% of total cell volume. It is also the primary protein and lipid synthesis factory for most cell organelles, such as the Golgi apparatus, lysosomes, secretory vesicles, and the plasma membrane. Despite being the most extensive and functionally complex subcellular organelle, ER was the last to be discovered. After years of deliberation, Keith Porter and George Palade in the year 1954,...
The Endoplasmic Reticulum
The endoplasmic reticulum or ER makes up for more than half of the membranes in a cell and accounts for 10% of total cell volume. It is also the primary protein and lipid synthesis factory for most cell organelles, such as the Golgi apparatus, lysosomes, secretory vesicles, and the plasma membrane. Despite being the most extensive and functionally complex subcellular organelle, ER was the last to be discovered. After years of deliberation, Keith Porter and George Palade in the year 1954,...
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...


