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. Author manuscript; available in PMC: 2013 Dec 1.
Published in final edited form as: J Neurochem. 2012 Oct 11;123(5):689–699. doi: 10.1111/j.1471-4159.2012.07918.x

Fig. 6.

Fig. 6

Effects of aging on the specific activity of PMCA in the raft fractions (#2–4) assayed without the addition of exogenous CaM. Each point is the mean ± SEM of triplicate determinations of the specific activity in nmol Pi/mg protein/min for the raft fractions obtained from the SPMs isolated from 4 sets of animals at 6, 23, and 34 mos of age. Curves were plotted with least squares fitting of the data to the Michaelis-Menten equation using Sigma Plot 11. The Vmax and Kact values determined in the presence and absence of saturating levels of exogenous CaM are listed in Table 3.