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Calcium-Binding Protein Protocols Calcium-Binding Protein Protocols

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Electron Magnetic Resonance Studies 203<br />

domain. By adding saturated sucrose to the sample, the splittings in the EPR<br />

spectra will move outward (i.e., increase), frequently revealing other motional<br />

components that might exist (3). Another technique involves increasing the modulation<br />

and receiver gain four- to fivefold, consequently overmodulating the narrow<br />

line components and emphasizing the broad slow motional components.<br />

Acknowledgment<br />

This work was supported in part by grants from the U.S.P.H.S.<br />

References<br />

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3. Berliner, L. J. (1980) Using the spin label method in enzymology, in Spectroscopy<br />

in Biochemistry, vol. II, CRC, West Palm Beach, Florida, pp. 1–56 .<br />

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11. Berliner, L. J., Ellis, P. D., and Murakami, K. (1983) Mn(II) and 113-Cd NMR<br />

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12. Buttlaire, D. H., Reed, G. H., and Himes, R. (1975) Electron paramagnetic resonance<br />

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