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相关概念视频

Translocation of Proteins into the Mitochondria01:19

Translocation of Proteins into the Mitochondria

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Mitochondrial precursors are translocated to the internal subcompartments via independent mechanisms involving distinct protein machineries called translocases.
Sorting of outer membrane proteins:
Mitochondrial outer membrane proteins are of two types: the transmembrane, beta-barrel porins, and the membrane-anchored, alpha-helical proteins. Beta-barrel porin precursors are translocated by the TOM complex and inserted into the outer mitochondrial membrane by the SAM complex. In contrast,...
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Mitochondria01:37

Mitochondria

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Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
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Mitochondrial Membranes01:45

Mitochondrial Membranes

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A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...
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Mitochondrial Protein Sorting01:39

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Mitochondria are double-membrane organelles of the eukaryotes involved in cellular metabolism, signaling, ATP synthesis, and programmed cell death.  Each of these processes requires specific proteins and enzymes that must be correctly sorted to the right mitochondrial subcompartment for the proper functioning of the organelle.
Most of these mitochondrial proteins are encoded by the nucleus and imported to the mitochondria as unfolded or loosely folded precursors. Mitochondrial precursors...
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Autophagy01:27

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Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
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Electron Transport Chain: Complex I and II01:46

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The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
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相关实验视频

Updated: Jun 23, 2025

Visualizing Mitophagy with Fluorescent Dyes for Mitochondria and Lysosome
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Visualizing Mitophagy with Fluorescent Dyes for Mitochondria and Lysosome

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嗅觉调节了外围线粒细胞和线粒体功能.

Julian G Dishart1,2,3, Corinne L Pender1,2,3, Koning Shen1,2,3

  • 1The Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA.

Science advances
|June 21, 2024
PubMed
概括
此摘要是机器生成的。

嗅觉系统调节线粒体的应激反应. 沉默嗅觉神经元触发了线粒体中展开的蛋白质反应 (UPRMT),增强了病原体的抵抗力.

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Sensitive Measurement of Mitophagy by Flow Cytometry Using the pH-dependent Fluorescent Reporter mt-Keima
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相关实验视频

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Author Spotlight: Detection of Mitophagy in Caenorhabditis elegans and Mammalian Cells Using Organelle-Specific Dyes
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科学领域:

  • 神经科学是一个神经科学.
  • 细胞生物学 细胞生物学
  • 线粒体动力学的动力学

背景情况:

  • 中枢神经系统调节外周细胞应激反应,包括线粒体展开蛋白质反应 (UPRMT).
  • 这种调节能力的进化背景尚不清楚,尽管UPRMT与感染和代谢变化有关.

研究的目的:

  • 为了调查香味神经系统是否在Caenorhabditis elegans中非自主地控制UPR.
  • 探索嗅觉信号在细胞压力和生物体防御中的作用.

主要方法:

  • 在C. elegans*中沉默AWC嗅觉神经元对.
  • 评估UPRMT的诱导和氧化酸化水平.
  • 评估病原体对*Pseudomonas aeruginosa*的耐药性.
  • 研究血清素信号传递,帕金介导的线粒和ATFS-1转录因子的作用.

主要成果:

  • 沉默AWC神经元强烈诱导UPRMT和减少氧化酸化.
  • 这种效应取决于血清素信号传递和帕金基介导的线粒.
  • 通过AWC神经元切除,获得了对P. aeruginosa*的部分耐药性,而这种耐药性取决于UPRMT和线粒细胞吸收.
  • 这种抗性部分需要ATFS-1,一种UPRMT转录因子.

结论:

  • 嗅觉神经系统在调节整个生物体的线粒体动力学方面发挥着作用.
  • 这种调节可能会让生物体为代谢压力或感染做好准备.
  • 嗅觉控制UPRMT和线粒细胞的作用有助于病原体的耐药性.