相关实验视频
Updated: Jun 19, 2026

07:47
Microscopy of Fission Yeast Sexual Lifecycle
Published on: March 9, 2016
如何裂变酵母裂变在中间
Cell
|January 26, 1996
概括
核中的核.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- 细胞分裂平面对于真核细胞的细胞繁殖至关重要.
- 了解定位细胞分裂部位的机制是研究的一个关键领域.
研究的目的:
- 研究核定位在核分裂酵母细胞分裂平面的确定中的作用.
- 为了识别参与分裂部位放置的分子信号.
主要方法:
- 控制收缩环的基因产品的表征.
- 分析参与空间调节的mid1p等蛋白质.
主要成果:
- 前代细胞核的位置可能会决定细胞分裂平面.
- 特定的基因产物,如mid1p,涉及到将分裂部位定位的信号通路.
结论:
- 核位置是分裂酵母细胞分裂平面的潜在决定因素.
- 裂变酵母的信号机制可以在真核生物中保存,以确定分裂地点.
相关概念视频
Yeast Signaling
Yeasts are single-celled organisms, but unlike bacteria, they are eukaryotes (cells with a nucleus). Cell signaling in yeast is similar to signaling in other eukaryotic cells. A ligand, such as a protein or a small molecule released from a yeast cell, attaches to a receptor on the cell surface. The binding stimulates second-messenger kinases to activate or inactivate transcription factors that further regulate gene expression. Many of the yeast intracellular signaling cascades have similar...
Binary Fission
Fission is the division of a single entity into two or more parts, which regenerate into separate entities that resemble the original. Organisms in the Archaea and Bacteria domains reproduce using binary fission, in which a parent cell splits into two parts that can each grow to the size of the original parent cell. This asexual method of reproduction produces cells that are all genetically identical.
Mitosis and Cytokinesis
In eukaryotes, the cell division cycle is divided into distinct, coordinated cellular processes that include cell growth, DNA replication/chromosome duplication, chromosome distribution to daughter cells, and finally, cell division. The cell cycle is tightly regulated by its regulatory systems as well as extracellular signals that affect cell proliferation.
The processes of the cell cycle occur over approximately 24 hours (in typical human cells) and in two major distinguishable stages. The...
The processes of the cell cycle occur over approximately 24 hours (in typical human cells) and in two major distinguishable stages. The...
Nuclear Fission
Many heavier elements with smaller binding energies per nucleon can decompose into more stable elements that have intermediate mass numbers and larger binding energies per nucleon—that is, mass numbers and binding energies per nucleon that are closer to the “peak” of the binding energy graph near 56. Sometimes neutrons are also produced. This decomposition of a large nucleus into smaller pieces is called fission. The breaking is rather random with the formation of a large number of different...
Mitosis and Cytokinesis
In eukaryotes, the cell division cycle is divided into distinct, coordinated cellular processes that include cell growth, DNA replication/chromosome duplication, chromosome distribution to daughter cells, and finally, cell division. The cell cycle is tightly regulated by its regulatory systems as well as extracellular signals that affect cell proliferation.
The processes of the cell cycle occur over approximately 24 hours (in typical human cells) and in two major distinguishable stages. The...
The processes of the cell cycle occur over approximately 24 hours (in typical human cells) and in two major distinguishable stages. The...
Binary Fission
Binary fission is the primary mode of asexual reproduction in prokaryotes, such as bacteria. It results in the production of two genetically identical daughter cells. This highly efficient process ensures the rapid propagation of bacterial populations under favorable conditions and involves coordinated cellular and molecular events.DNA Replication and SeparationThe process begins with the replication of the bacterial chromosome. The circular DNA molecule unwinds at a specific origin of...

