BIOL130 Chapter Notes - Chapter 8: Protein Kinase, Second Messenger System, Membrane Protein
5 Aug 2016
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Yeast is a single cell organism that evolved into multicellular organisms. Goes from round state into pear shaped when mating called shmoo. D) contact-dependent: communicates to target cell using a membrane-bound signal molecule which attaches to the receptor of the target cell short range whisper in ear. Acetyl choline (signal protein) has 3 different receptors that have different functions: heart muscle cells slows down heart rate using receptor protein. K+ channels in heart muscle cells that is activated by beta-gamma complex and opens up the ion channel to let potassium pass from cytosol to extracellular space. Immediate responses already have enzymes, so activity is speed up. Long term responses need something that drives gene transcription (makes a protein in nucleus) Cell surface receptors: attached on plasma membrane and waits for hydrophilic signal molecule to attach integral transmembrane proteins and the signal is transcribed across membrane.
