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Related Concept Videos

Channel Rhodopsins01:11

Channel Rhodopsins

Most organisms use photoreceptors to sense and respond to light. Examples of photoreceptors include bacteriorhodopsins and bacteriophytochromes in some bacteria, phytochromes in plants, and rhodopsins in the photoreceptor cells of the vertebral retina. The light-sensitive property of these receptors is because of the bound chromophores, such as bilin in the phytochromes and retinal in the rhodopsins.
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Related Experiment Video

Updated: Jun 19, 2026

Improved Lipofuscin Models and Quantification of Outer Segment Phagocytosis Capacity in Highly Polarized Human Retinal Pigment Epithelial Cultures
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The effects of lipids on channel function.

Anthony G Lee1

  • 1School of Biological Sciences, University of Southampton, Southampton, SO16 7PX, UK. agl@soton.ac.uk

Journal of Biology
|October 13, 2009
PubMed
Summary

Anionic lipids, such as those found in cell membranes, impact the function of protein channels, including connexins. This interaction is likely due to direct binding between the lipids and the channel proteins.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Background:

  • Anionic lipids are crucial components of cellular membranes.
  • Various ion channels and protein complexes are known to be modulated by lipid composition.
  • Connexins, forming gap junctions, are essential for intercellular communication.

Purpose of the Study:

  • To investigate the influence of anionic lipids on the function of protein channels.
  • To explore the potential mechanism of interaction, specifically direct binding, between anionic lipids and connexin channels.

Main Methods:

  • The study likely involved biochemical assays and biophysical techniques to assess channel function.
  • Electrophysiological recordings may have been used to measure channel activity.
  • Lipid-binding assays could confirm direct interactions.

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Main Results:

  • Anionic lipids were demonstrated to affect the function of connexin channels.
  • Evidence suggests that these effects are mediated by direct binding of anionic lipids to the connexin proteins.

Conclusions:

  • Anionic lipids play a significant role in regulating connexin channel function.
  • Direct lipid-protein interactions represent a key mechanism for this modulation.