Related Experiment Video
Updated: Jan 10, 2026

Axonal Transport of Organelles in Motor Neuron Cultures using Microfluidic Chambers System
Published on: May 5, 2020
Organellar channels and transporters
Haoxing Xu1, Enrico Martinoia2, Ildiko Szabo3
1Department of Molecular, Cellular, and Developmental Biology, University of Michigan, 3089 Natural Science Building (Kraus), 830 North University Avenue, Ann Arbor, MI 48109-1048, USA.
Research on intracellular ion transport is advancing rapidly, with new organellar channels identified and characterized using cutting-edge technologies. These discoveries are crucial for understanding cellular processes and various diseases.
Area of Science:
- Cell Biology
- Biochemistry
- Physiology
Background:
- Most cellular transport occurs intracellularly, but mechanisms across organelle membranes remain poorly understood.
- Plasma membrane transporters are well-studied, contrasting with the limited knowledge of intracellular membrane transport.
- Over 80% of transport processes occur within cells, highlighting the importance of intracellular mechanisms.
Purpose of the Study:
- To review recent advances in understanding intracellular ion transport.
- To highlight the molecular identification and characterization of organellar channels and transporters.
- To discuss the physiological roles and pathological involvement of these key proteins.
Main Methods:
- Super-resolution microscopy
- Organellar electrophysiology
- Organelle-targeted fluorescence imaging
- Organelle proteomics
Main Results:
- Significant technical advancements have enabled new discoveries in intracellular ion transport.
- Numerous organellar channels and transporters have been molecularly identified and electrophysiologically characterized.
- The physiological functions of organellar channels in cell death and photosynthesis are being elucidated.
Conclusions:
- Intracellular membrane transport is a rapidly developing field with significant implications for cell biology and disease.
- New technologies are crucial for advancing the study of organellar channels and transporters.
- Further research is needed to fully understand the roles of these proteins in health and pathology.
More Related Videos
07:47A Proteoliposome-Based Efflux Assay to Determine Single-molecule Properties of Cl- Channels and Transporters
Published on: April 20, 2015
07:38Functional Characterization of Na+/H+ Exchangers of Intracellular Compartments Using Proton-killing Selection to Express Them at the Plasma Membrane
Published on: March 30, 2015
Related Concept Videos
The Significance of Membrane Transport
Transporters facilitate either an active or passive movement of solutes. They can allow a single-molecule transport down its...
Overview of Protein Sorting and Transport
Protein sorting can be of two types: signal-based sorting and vesicle-based trafficking. In signal-based sorting, specific amino acid sequences called sorting signals target proteins to the proper location inside the cell either via gated transport or by protein translocation. In gated transport, folded...
Facilitated Diffusion
In this process, substrates such as organic compounds and ions interact with a transporter on one side, triggering conformational changes in proteins that enable...
Introduction to Membrane Traffic
The transport of soluble and membrane proteins is mediated by transport vesicles that collect cargo from one cellular compartment and deliver it to another by fusing with the target organelle membrane. The Rab...
Protein Transport into the Inner Mitochondrial Membrane
Transport of mitochondrial precursors across the TIM23 channel is driven by...
Protein Transport to the Outer Chloroplast Membrane
Two models describe the mechanism of precursor recognition and entry across the outer membrane through the TOC complex. Model 1 suggests the newly synthesized precursor binds to the TOC receptor 159 and forms a complex.