Second Messenger Systems

by Georgina Cornwall, PhD

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    About the Lecture

    The lecture Second Messenger Systems by Georgina Cornwall, PhD is from the course Cellular Structure. It contains the following chapters:

    • How Second Messenger Systems Work
    • Second Messenger Systems
    • Receptor Tyrosine Kinase Pathways
    • G-Protein Coupled Receptors
    • Recap - This is Where We Have Been

    Included Quiz Questions

    1. Most second messenger systems fall into either RTK pathways, or G-protein coupled receptor pathways
    2. RTK pathways are generally involved in regulation of normal cell processes
    3. G protein coupled pathways are generally involved in mediating structural and metabolic changes.
    4. Rarely involve a multi step signal amplification
    1. dimerization of two protein kinase receptor subunits
    2. autophosphorylation
    3. docking proteins and adapter proteins
    4. G-protein kinases
    1. MAP kinase cascades for signal amplification
    2. Molecular switches that connect pathways
    3. Multiple cellular targets resulting in many cellular effects
    4. Reduction in signal from reverse kinase cascades
    1. ...are the proteins that are activated by the G-protein to make the second messenger
    2. ... could be adenylyl cyclase or Phospholipase C
    3. ...could be cyclic AMP and PKA
    1. True
    2. False

    Author of lecture Second Messenger Systems

     Georgina Cornwall, PhD

    Georgina Cornwall, PhD

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