Term
signal transduction pathway |
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Definition
a series of steps by which a signal on a cell's surface is converted into a specific cellular response |
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messenger molecules that travel only short distances |
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used in long-distance signaling, plants and animal |
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first stage of cell signaling |
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second step in cell signaling |
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third step in cell signaling |
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Term
G-prtein-coupled receptor |
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Definition
the largest family of cell-surface receptors |
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acts as an on ad off switch for GCPR |
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membranes receptors that attach phosphates to tyrosines |
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receptor acts as a gate when the receptor changes shape |
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trasfer phosphates from ATP to protein in a process called phosphorylation |
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remove the phosphates from proteins a process called dephosporylation |
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small, nonprotein, water solluble molecules or ions that spread throughout a cell by diffusion |
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one of the most widely used second messengers |
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an enzyme in the plasma membrane converts ATP to cAMP in response to extracellular signal |
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large relay proteins to wich other proteins are attached |
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programmed or controlled cell suicide |
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