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Related Concept Videos

Translocation of Proteins into the Mitochondria01:19

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Mitochondrial precursors are translocated to the internal subcompartments via independent mechanisms involving distinct protein machineries called translocases.
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The Inner Mitochondrial Membrane01:28

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The inner mitochondrial membrane is the primary site of ATP synthesis. The inner membrane domain that forms a smooth layer adjacent to the outer membrane is called the inner boundary membrane. This domain contains membrane transporters that drive metabolites in and out of the mitochondria.  In contrast, the inner membrane network that invaginates into the matrix space is called the cristae membrane. This domain accounts for principle mitochondrial function as it accommodates the protein...
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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.
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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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Protein Transport into the Inner Mitochondrial Membrane01:34

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Nuclear encoded mitochondrial precursors are imported to the inner membrane in a multistep process involving two separate translocons, TIM22 and TIM23. TIM23 is a cation-selective pore that remains closed by the N terminal segment of the protein. Negative charges on the TIM23 act as a receptor for the incoming precursor, pulling the positively charged matrix-targeting sequence for peptide insertion and translocation.
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Related Experiment Video

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Experimental Approaches to Study Mitochondrial Localization and Function of a Nuclear Cell Cycle Kinase, Cdk1
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DCF1 subcellular localization and its function in mitochondria.

Yanlu Chen1, Ruili Feng1, Guanghong Luo1

  • 1Laboratory of Molecular Neural Biology, School of Life Sciences, Shanghai University, China.

Biochimie
|October 28, 2017
PubMed
Summary
This summary is machine-generated.

Dendritic cell factor 1 (DCF1) is a transmembrane protein. This study reveals DCF1 localizes to multiple organelles, including mitochondria, impacting MGST1 expression and localization.

Keywords:
Endoplasmic reticulum/GolgiEndosomesLysosomesMitochondriacf1

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Area of Science:

  • Cell Biology
  • Molecular Biology
  • Neuroscience

Background:

  • Dendritic cell factor 1 (DCF1) is a transmembrane protein involved in neural stem cell differentiation and dendritic spine formation.
  • DCF1 also plays a role in autophagy and amyloid precursor protein regulation.
  • The subcellular localization of DCF1 has not been previously determined.

Purpose of the Study:

  • To investigate the subcellular localization of Dendritic cell factor 1 (DCF1).
  • To understand the organelle-specific functions of DCF1.

Main Methods:

  • Transient expression of DCF1 tagged with green fluorescent protein in HelaS3 and HEK293T cells.
  • Organelle localization analysis using fluorescence microscopy.
  • Confirmation of localization via iodixanol step gradient centrifugation.
  • Mitochondrial functional analysis.

Main Results:

  • DCF1 was found to be widely expressed across various organelles, including mitochondria, Golgi apparatus, endoplasmic reticulum, endosomes, and lysosomes.
  • Further analysis confirmed DCF1 localization to mitochondria, endosomes, lysosomes, endoplasmic reticulum, and proteasomes.
  • Functional analysis indicated that DCF1 influences the expression and localization of MGST1 within mitochondria.

Conclusions:

  • This study provides a comprehensive map of DCF1's subcellular localization.
  • The findings offer crucial insights into the multifaceted roles of DCF1 in cellular processes.
  • Understanding DCF1 localization is key to elucidating its complex functions in cell biology and neuroscience.