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Related Concept Videos

Receptor-mediated Endocytosis01:20

Receptor-mediated Endocytosis

Receptor-mediated endocytosis is when bulk amounts of specific molecules are imported into a cell after binding to cell surface receptors. The molecules bound to these receptors are taken into the cell through inward folding of the cell surface membrane, which is eventually pinched off into a vesicle within the cell. Structural proteins, such as clathrin, coat the budding vesicle.
Clathrin-Mediated Endocytosis of LDL
One well-characterized example of receptor-mediated endocytosis is the...
Receptor-mediated Endocytosis01:38

Receptor-mediated Endocytosis

Overview
Receptor-Mediated Endocytosis01:20

Receptor-Mediated Endocytosis

Receptor-mediated endocytosis is when bulk amounts of specific molecules are imported into a cell after binding to cell surface receptors. The molecules bound to these receptors are taken into the cell through inward folding of the cell surface membrane, which is eventually pinched off into a vesicle within the cell. Structural proteins, such as clathrin, coat the budding vesicle.
Clathrin-Mediated Endocytosis of LDL
One well-characterized example of receptor-mediated endocytosis is the...
The Early Endosome: Endocytosis of Transferrin01:28

The Early Endosome: Endocytosis of Transferrin

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...
Recycling Endosomes and Transcytosis00:58

Recycling Endosomes and Transcytosis

The recycling endosome, also known as the endosomal recycling compartment (ERC), is a part of the slow-recycling process of the endocytic pathway. Molecules internalized through receptor-mediated endocytosis are either degraded in the lysosomes or are recycled to the plasma membrane through the fast- or slow-recycling route.
The recycling endosome is not a single organelle but an extensively tubulated network of recycling pathways. It functions in storing molecules or transporting them across...
Directing Proteins to the Rough Endoplasmic Reticulum01:34

Directing Proteins to the Rough Endoplasmic Reticulum

The organelle-specific signaling sequences direct proteins synthesized in the cytosol to their final destination like ER, mitochondria, peroxisomes, etc. Some of the proteins directed to ER are then trafficked via vesicles to other organelles within the cell or the extracellular environment through the Golgi complex. For example, the rough ER synthesizes soluble proteins for transportation to the lysosomes or secretion out of the cell. It can also synthesize transmembrane proteins that can...

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Related Experiment Video

Updated: Jun 12, 2026

Visualization of Endosome Dynamics in Living Nerve Terminals with Four-dimensional Fluorescence Imaging
10:51

Visualization of Endosome Dynamics in Living Nerve Terminals with Four-dimensional Fluorescence Imaging

Published on: April 16, 2014

Signaling endosomes: seeing is believing.

Marta Miaczynska1, Dafna Bar-Sagi

  • 1International Institute of Molecular and Cell Biology, Laboratory of Cell Biology, 4 Ks. Trojdena Street, 02-109 Warsaw, Poland. miaczynska@iimcb.gov.pl

Current Opinion in Cell Biology
|June 12, 2010
PubMed
Summary
This summary is machine-generated.

Cellular signaling relies on endosomes, which are key membrane-bound compartments. These endosomes actively receive and emit signals, regulating vital cell functions like migration and communication.

More Related Videos

Visualizing Clathrin-mediated Endocytosis of G Protein-coupled Receptors at Single-event Resolution via TIRF Microscopy
12:40

Visualizing Clathrin-mediated Endocytosis of G Protein-coupled Receptors at Single-event Resolution via TIRF Microscopy

Published on: October 20, 2014

Related Experiment Videos

Last Updated: Jun 12, 2026

Visualization of Endosome Dynamics in Living Nerve Terminals with Four-dimensional Fluorescence Imaging
10:51

Visualization of Endosome Dynamics in Living Nerve Terminals with Four-dimensional Fluorescence Imaging

Published on: April 16, 2014

Visualizing Clathrin-mediated Endocytosis of G Protein-coupled Receptors at Single-event Resolution via TIRF Microscopy
12:40

Visualizing Clathrin-mediated Endocytosis of G Protein-coupled Receptors at Single-event Resolution via TIRF Microscopy

Published on: October 20, 2014

Area of Science:

  • Cell Biology
  • Molecular Signaling

Background:

  • Signaling compartmentalization refines context-dependent cellular responses.
  • Endosomes are intracellular membrane-bound compartments crucial for receptor-bound signaling complexes.
  • Recent advances in high-resolution microscopy enable detailed observation of endosome function.

Purpose of the Study:

  • To highlight the role of endosomes in signal reception and emission.
  • To underscore the indispensable functions of endosomes in cellular processes.

Main Methods:

  • High-resolution microscopy-based imaging techniques.
  • Functional studies investigating endosome-mediated signaling.

Main Results:

  • Endosomes are actively engaged in both signal reception and emission.
  • Endosomes play critical roles in orchestrating cellular signals.
  • These signals regulate cell migration, invasion, asymmetric cell division, differentiation, and intercellular communication.

Conclusions:

  • Endosomes are central players in cellular signaling pathways.
  • The compartmentalization of signaling within endosomes is vital for cellular regulation.