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相关概念视频

Cell Migration01:09

Cell Migration

Cell migration, the process by which cells move from one location to another, is essential for the proper development and viability of organisms throughout their life. When cells are not able to migrate properly to their ordained locations, various disorders may occur. For example, disruption in cell migration causes chronic inflammatory diseases such as arthritis.
Microtubule Instability02:17

Microtubule Instability

Microtubules are hollow cylindrical filaments having a diameter of approximately 25 nm and a length that varies from 200 nm to 25 μm. GTP-bound tubulin subunits form αβ-heterodimers for microtubule assembly. These core building blocks interact longitudinally, polymerizing into protofilaments. The protofilaments then interact with one another through lateral bonding forces to form stable cylindrical microtubules. These cylindrical filaments are dynamic as they undergo repeated assembly and...
Separation of Sister Chromatids02:17

Separation of Sister Chromatids

At the transition from prophase to metaphase, there is a reduction in cohesion along the chromosomal arms, resulting in the resolution of sister chromatids. However, residual cohesin connections remain to hold the sister chromatids together until the transition from metaphase to anaphase. The residual connection prevents any premature separation of sister chromatids, blocking the risks of aneuploidy within the daughter cells.
At the onset of anaphase, separase, a proteolytic enzyme, is...
Overview Of Cell Separation And Isolation01:20

Overview Of Cell Separation And Isolation

Cell separation was first achieved in 1964 by S. H. Seal, who separated large tumor cells from the smaller blood cells using filtration. Two years later, Pohl and Hawk performed experiments on how cells respond differently to a nonuniform electric field based on the cell type. Such observations were the inception of cell separation methods, which allow isolating a single cell type from a heterogeneous sample.
Separation of Sister Chromatids02:17

Separation of Sister Chromatids

At the transition from prophase to metaphase, there is a reduction in cohesion along the chromosomal arms, resulting in the resolution of sister chromatids. However, residual cohesin connections remain to hold the sister chromatids together until the transition from metaphase to anaphase. The residual connection prevents any premature separation of sister chromatids, blocking the risks of aneuploidy within the daughter cells.
At the onset of anaphase, separase, a proteolytic enzyme, is...
Cellular Differentiation00:57

Cellular Differentiation

How does a complex organism such as a human develop from a single cell? It all starts from a single fertilized egg which gives rise to a vast array of cell types, such as nerve cells, muscle cells, and epithelial cells that characterize the adult? Throughout development and adulthood, cellular differentiation leads cells to assume their final morphology and physiology. Differentiation is the process by which unspecialized cells become specialized to carry out distinct functions.
A zygote is a...

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相关实验视频

Updated: Jul 2, 2026

Combined Immunofluorescence and DNA FISH on 3D-preserved Interphase Nuclei to Study Changes in 3D Nuclear Organization
13:55

Combined Immunofluorescence and DNA FISH on 3D-preserved Interphase Nuclei to Study Changes in 3D Nuclear Organization

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异构体标志着静态的内细胞分裂部位.

Tobias C Walther1, Jason H Brickner, Pablo S Aguilar

  • 1Howard Hughes Medical Institute and Department of Biochemistry and Biophysics, University of California at San Francisco, 600-16th Street, San Francisco, California 94143-2200, USA. twalther@itsa.ucsf.edu

Nature
|February 24, 2006
PubMed
概括

研究人员发现了酵母体内大量蛋白质组合的异体体,这些蛋白质组合标记了内细胞分裂的特定部位. 这些由Pil1和Lsp1组成的结构,对于通过血膜将营养素和受体内部化至关重要.

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:

  • 细胞内核分裂是一个重要的细胞过程,用于回收血成分,调节细胞表面受体,并在真核细胞中内化营养素.
  • 在特定的血膜位置启动内细胞分裂的精确机制在很大程度上是未知的,其中可能包括随机形成或特定地点诱导.

研究的目的:

  • 为了研究在血膜上启动细胞内核的机制.
  • 识别标志着内细胞分裂部位的特定结构或位置.

主要方法:

  • 在Saccharomyces cerevisiae中进行显微镜和蛋白质定位研究.
  • 具有已知的内细胞效应因子的异体组分的遗传相互作用分析.

主要成果:

  • 在酵母血上识别大型,不运动的蛋白质组合,称为异构体.
  • 异构体主要由细胞质蛋白 Pil1 和 Lsp1 组成,其中 Sur7 作为血成分.
  • 异构体与蛋白质和脂质内细胞分裂的部位结合,并与内细胞通路进行遗传相互作用. 失去Pil1会导致异构体残留的聚类,并重定向内细胞形成.

结论:

  • 异构体作为酵母体的血膜上的内细胞位点的特定标记.

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Last Updated: Jul 2, 2026

Combined Immunofluorescence and DNA FISH on 3D-preserved Interphase Nuclei to Study Changes in 3D Nuclear Organization
13:55

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Live Cell Imaging of Chromosome Segregation During Mitosis
06:39

Live Cell Imaging of Chromosome Segregation During Mitosis

Published on: March 14, 2018

Specific Labeling of Mitochondrial Nucleoids for Time-lapse Structured Illumination Microscopy
07:53

Specific Labeling of Mitochondrial Nucleoids for Time-lapse Structured Illumination Microscopy

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  • 这些结构在组织和潜在地启动内细胞分裂过程中发挥着作用.
  • 异位体组件是内细胞分裂的调节和执行的组成部分.