A liver cell homogenate is prepared creating a broken cell preparation that is then
centrifuged to yield a particulate fraction that is found in the pellet at the bottom of the tube
and a soluble fraction in the cytoplasm. In which fraction will each of the following be found? (1
pt each, 5 total)
A. G-protein coupled receptor
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B. G-protein-alpha
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C. G-protein- beta
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D. cAMP
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E. adenylyl cyclase
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