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. Author manuscript; available in PMC: 2010 Jul 31.
Published in final edited form as: J Mol Biol. 2009 Jun 6;390(5):913–923. doi: 10.1016/j.jmb.2009.06.007

Figure 2. EPR spectra from syt1C2AB.

Figure 2

(a) R1 and R7 spin-labeled side chains that are obtained by derivatization of cysteine mutants of syt1C2AB. (b) X-band EPR spectra of thirteen R1 double labeled mutants of syt1C2AB where one label is in C2A and a second is in C2B. The black traces are spectra recorded in the presence of excess Ca2+ (1 mM) and the red traces are spectra recorded in the Ca2+-free state.