Insights into the In Vivo Regulation of Glutamate Dehydrogenase from the Foot Muscle of an Estivating Land Snail

Figure 3

Effect of in vitro incubations to stimulate the activity of endogenous protein kinases and protein phosphatases on Otala lactea foot muscle GDH 𝑉_max. The STOP condition indicates where both protein kinases and phosphatases were inhibited during the incubation, and OPEN indicates an incubation that did not activate nor inhibit any protein kinases or phosphatases. Data are means ± SEM, 𝑛=3 independent purified preparations. ^aSignificantly different from the corresponding control value under the same incubation condition. ^bSignificantly different from the corresponding value in the STOP condition. The statistical test used was the Student’s 𝑡-test (𝑃<0.05).