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Unformatted text preview: Signal Transduction What does transduction mean. Three examples G-protein Tyrosine-Kinase Ion-gated channel Responses These result in signal transduction pathways Or In some cases second messenger systems Characteristics of Signaling Systems Allow for signal amplification Allow the same signal to function differently in different cells. When epinephrine binds to cardiac (heart) muscle cells, it speeds their contraction. When it binds to muscle cells of the small intestine, it inhibits their contraction. How can the same hormone have different effects on muscle cells? The two types of muscle cells have different signal transduction pathways for epinephrine and thus have different cellular responses...
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- Fall '07
- Biology, signal transduction pathways