5 - http:/www4.ncsu.edu/~knopp/BCH451/e99c3.htm BCH 451...

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BCH 451 Fall 1999 Exam #3 1. Draw the predominate structures of the following molecules at pH 7. Be sure to include all carbon and hydrogen atoms! {4} Structure #1 at pH 7and in anti configuration: A = ppdUpdA, B = TppGp {4} Structure #2 at pH 6: C = 1-linolenoyl, 2-stearoyl phosphatidyl choline, D = 1-oleyl, 2-palmitoyl phosphatidyl serine Circle the RNA type which is specified on the first page: M R SN T (0.3) Give the full name: (0.2) Give the approximate % composition in the cell: (0.5) Give the size(s) of this type in # of bases: (2) Give a complete description of its function within the cell: {1} Definition M = metabolism; P = pathway {3} List the three types of proteins which are associated with membranes and describe the unique feature(s) of each: {1} List two different cellular effects of signal transduction in general terms: {2} [Puzzler] What would be result of a bacterial product [toxin] which would bind to the subunits of the G-proteins and block the binding of the subunit? {3} Describe the series of steps which occur in signal transduction after the activation of PLC:
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5 - http:/www4.ncsu.edu/~knopp/BCH451/e99c3.htm BCH 451...

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