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gap junctions |
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gap junctions regions of high and special ionic permeability between closely apposed cells. They are places at which cells exchange molecules of large size and provide an avenue by which developing cells can influence each other. Called also nexus. neuronal gap junctions very tight contacts between some neurons permitting the almost instant transmission of impulses from one neuron to the other; structural elements extend across the gap conferring a continuity of cytoplasm between the cells. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Gap junctions are specialized membrane proteins that regulate the passage of small molecules, ions, and electrical current between neighboring cells. The two researchers discovered that cell-to-cell portals known as gap junctions are required for proper left-right patterning. Cell-to-cell communication channels called gap junctions appear to play a role in causing mutations in bystander cells. |
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