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. 2011 Feb 22;30(7):1251–1262. doi: 10.1038/emboj.2011.40

Figure 6.

Figure 6

Shifts in the R3 equilibrium induced by binding of autocamtide-2 (AC-2). EPR spectra for site 307 show that the level of the mobile spectral component arising from undocked conformation of the R3 segment increases in the presence of AC-2. The T286E mutation increases the affinity of this interaction as evidenced by the lower molar ratio of peptide to CaMKII (x axis) required to increase the mobile spin label fraction.