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. 2009 Dec 14;285(7):5106–5116. doi: 10.1074/jbc.M109.070995

FIGURE 4.

FIGURE 4.

Effects of Mys knockdown on PKA activity and amount of inactive PKA in zebrafish embryos. A, immunoblotting of extracts from wild-type embryos (−) and embryos injected with 5mm MO (5mm) and mys MO (mys). B, PKA activity in the embryos in A (mean ± S.D., n = 3; asterisk, p < 0.001, Student's t test). Knockdown of Mys by injection of mys MO resulted in reduction of PKA activity. C, immunoblotting of extracts from wild-type embryos (−) and embryos injected with mys SD-MO (SD). D, PKA activity in the embryos in C (mean ± S.D., n = 3; asterisk, p < 0.005, Student's t test). E, immunoprecipitations of extracts from wild-type embryos (−) and embryos injected with 5mm MO (5mm) and mys MO (mys) using anti-Prkar1a antibody. F, relative amount of Prkac coimmunoprecipitated with Prkar1a in the embryos in E (mean ± S.D., n = 3; asterisk, p < 0.01, Student's t test). Knockdown of Mys increased the amount of Prkac binding to Prkar1a. G, immunoblotting of extracts from wild-type embryos (−) and embryos injected with prkar1a MO (prkar1a). H, PKA activity in the embryos in G (mean ± S.D., n = 3; asterisk, p < 0.001, Student's t test). Knockdown of Prkar1a significantly increased PKA activity.