16 - http/www4.ncsu.edu/~knopp/BCH451/e05a3.htm BCH 451...

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BCH 451 Spring 2005 Exam #3 NAME 1. Draw the predominate structures of the following molecules at the pH indicated. Be sure to include all carbon and hydrogen atoms! (1) A = cAMP; B = IP3 [pH = 7] (3) D = 1-palmitoleyl, 2-oleyl phosphatidyl serine; E = 1-steryl, 2-linolenyl phosphatidyl serine [pH = 7] (3) G = ppdApddUp; H = pGppddCpp syn @ pH = 7 2. (0.3 each) Linked blanks: In the adenylyl cyclase pathway, an external hormone binds to a on the surface of the cell. As a consequence of this binding, a change occurs which activates the transducer - . Upon activation, the transducer exchanges for and loses . The migrates to adenylyl cyclase, which acts as the in this pathway. Upon activation, adenylyl cyclase uses to produce . This molecule is called a second messenger. It moves into the cytosol where is binds to the sites of . is now released and proceeds to cause the cellular effect of . 3.
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16 - http/www4.ncsu.edu/~knopp/BCH451/e05a3.htm BCH 451...

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