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gate |
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gate
[gāt] 1 n, an electronic circuit that passes a pulse only when a signal (the gate pulse) is present at a second input. 2 n, a mechanism for opening or closing a protein channel in a cell membrane, regulated by a signal such as increased concentration of a neurotransmitter, change in electrical potential, or physical binding of a ligand molecule to the protein to cause a conformational change in the protein molecule. 3 v, to open and close selectively and function as a gate. Gate Cell biology A structure composed of one or more proteins that regulate passage of ions through channels in the cell membrane; gates may be chemically regulated—by neurotransmitters—or voltage regulated—in response to a threshold level of depolarization Drug slang A regional term for Spanish heroin Informatics An electronic circuit that performs an operation when the criteria for a logical relation—e.g., AND, or OR—are fulfilled Immunology verb To limit the size of cells detected and their fluorescence in flow cytometry to increase the purity of cell population being analysed or sorted Vox populi A new root form derived from the Watergate scandal which toppled the Nixon administration; -gate has been applied to various scandals. Medically-related -gates include AIDSgate and Bloodgate gate [gāt] 1. an electronic circuit that passes a pulse only when a signal (the gate pulse) is present at a second input. 2. a mechanism for opening or closing a protein channel in a cell membrane, regulated by a signal such as increased concentration of a neurotransmitter, change in electrical potential, or physical binding of a ligand molecule to the protein to cause a conformational change in the protein molecule. 3. to open and close selectively and function as a gate. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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