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. 2009 Dec 30;285(11):8114–8121. doi: 10.1074/jbc.M109.063875

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© 2010 by The American Society for Biochemistry and Molecular Biology, Inc.

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FIGURE 9. — G protein activity of detergent-solubilized and purified pigments. a, light-dependent G protein activity of the wild type and K296G/nPrSB. Error bars represent the S.D. of five independent measurements. b, time course of G protein activity in the presence of hydroxylamine (22 mm). The G protein activity was measured similar to a, but samples were incubated with hydroxylamine after light irradiation, and GDP/GTPγS exchange was initiated at selected times. The assay was carried out at 288 K in the presence of 600 nm G_t. Receptor concentrations were 12.5 nm for both wild type and the mutant K296G. Error bars represent the S.D. of three independent measurements.