PKA activity in fly head homogenates.

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PKA activity in fly head homogenates. PKA activity in fly head homogenates. In the presence of cAMP (0.4 mm), PKA activity is increased by ∼30% in sws1 extracts compared with yw control flies, whereas expressing additional SWS in wild type reduces PKA activity (although not quite statistically significant; p = 0.054). Expression of additional PKA-C3 via Appl-GAL4 did not increase the overall PKA activity compared with yw controls. n = 16 for yw, n = 21 for sws1, n = 13 for elav-GAL4/UAS-SWS, and n = 15 for Appl-GAL4/UAS-PKA/C3. p/q, quotient of the luminosity value of phosphorylated to unphosphorylated kemptide peptide. Values were normalized to ng protein in the lysates. SEMs are indicated. *p < 0.01. Alexandre Bettencourt da Cruz et al. J. Neurosci. 2008;28:10885-10892 ©2008 by Society for Neuroscience