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Essential proteins such as insulin or low-density lipoprotein (LDL) and micronutrients such as iron enter a eukaryotic cell through receptor-mediated endocytosis. Subsequently, the early endosomes fuse with the vesicles containing such receptor-ligand complexes and play a vital role in sorting the incoming ligands and receptors. While the ligands are either degraded inside the vesicle or released into the cytosol, their receptors are returned to the plasma membrane for further rounds of...
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Related Experiment Video

Updated: Jul 15, 2026

Expression, Purification, and Liposome Binding of Budding Yeast SNX-BAR Heterodimers
10:28

Expression, Purification, and Liposome Binding of Budding Yeast SNX-BAR Heterodimers

Published on: December 6, 2019

Retromer and sorting nexins in development.

Marcel Verges1

  • 1Laboratory of Epithelial Cell Biology, Centro de Investigacion Principe Felipe, Valencia, Spain. mverges@cipf.es

Frontiers in Bioscience : a Journal and Virtual Library
|May 9, 2007
PubMed
Summary

Sorting nexins, particularly the retromer complex, are crucial for intracellular trafficking and receptor signaling. Recent studies highlight retromer

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Intracellular trafficking and signaling pathways share common molecular machinery.
  • Proper trafficking is essential for accurate signaling, exemplified by sustained signaling of endocytosed receptors.
  • Sorting nexins, especially the retromer complex, play a key role in endosomal receptor fate.

Purpose of the Study:

  • To review recent findings on the role of retromer in intracellular trafficking and signaling.
  • To discuss the implications of retromer's function in various model organisms.

Main Methods:

  • Review of existing literature on sorting nexins and retromer.
  • Analysis of data from yeast, mammalian cell cultures, mice, and Caenorhabditis elegans.
  • Focus on receptor trafficking and signaling mechanisms.

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Published on: February 21, 2019

Osmotic Avoidance in Caenorhabditis elegans: Synaptic Function of Two Genes, Orthologues of Human NRXN1 and NLGN1, as Candidates for Autism
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Osmotic Avoidance in Caenorhabditis elegans: Synaptic Function of Two Genes, Orthologues of Human NRXN1 and NLGN1, as Candidates for Autism

Published on: December 11, 2009

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Last Updated: Jul 15, 2026

Expression, Purification, and Liposome Binding of Budding Yeast SNX-BAR Heterodimers
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Expression, Purification, and Liposome Binding of Budding Yeast SNX-BAR Heterodimers

Published on: December 6, 2019

Analysis of Endocytic Uptake and Retrograde Transport to the Trans-Golgi Network Using Functionalized Nanobodies in Cultured Cells
11:05

Analysis of Endocytic Uptake and Retrograde Transport to the Trans-Golgi Network Using Functionalized Nanobodies in Cultured Cells

Published on: February 21, 2019

Osmotic Avoidance in Caenorhabditis elegans: Synaptic Function of Two Genes, Orthologues of Human NRXN1 and NLGN1, as Candidates for Autism
11:20

Osmotic Avoidance in Caenorhabditis elegans: Synaptic Function of Two Genes, Orthologues of Human NRXN1 and NLGN1, as Candidates for Autism

Published on: December 11, 2009

Main Results:

  • Retromer mediates endosome-to-Golgi retrieval of receptors in yeast and higher eukaryotes.
  • Retromer is essential for embryogenesis in model organisms like mice and C. elegans.
  • Sorting nexins are integral to controlling receptor fate at the endosome.

Conclusions:

  • The retromer complex is vital for coordinating intracellular trafficking and receptor signaling.
  • Retromer's function is conserved across species and critical for development.
  • Further research into retromer's implications is warranted.