The effects of calcium and magnesium ions on the secondary structure of calcium binding component of troponin |
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| Authors: | J Gruda H M Thérien E Cermakian |
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| Affiliation: | Département Chimie-Biologie Université du Québec à Trois-Rivières Trois-Rivières, Québec, Canada. |
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| Abstract: | A 40% increase of the α-helicity of calcium binding component of troponin was observed upon addition of micromolar concentrations of calcium ions. Magnesium ions cause also a significan increase of the helical content of this protein but at much higher concentrations than calcium. In the presence of 1mM MgCl2 micromolar concentrations of calcium ions do not affect the secondary structure of the troponin calcium binding component. |
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