Pfuhl et al., Biophys J 2011
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The spatial relationship of the actin and calmodulin contacts as well as the transient a-helical structures within the regulatory region of calponin provides a structural framework for understanding the Ca ( 2+ ) -dependent regulation of the actin-calponin interaction by calmodulin Naka et al., Biochem Biophys Res Commun 1990
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The phosphorylation of calponin by protein kinase C was inhibited markedly by calmodulin in a calcium dependent manner ... Kinetic analysis of calmodulin induced inhibition of calponin phosphorylation by protein kinase C revealed that calmodulin inhibited the phosphorylation in a noncompetitive fashion with calponin and the determined Ki value was 0.4 microM
Wills et al., Biochemistry 1994
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The proposed methods by which calponin regulation is effected include reversible phosphorylation of calponin which would allow contraction to occur and regulation by interaction with calcium-calmodulin Medvedeva et al., Biochem J 1996
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In the presence of Ca2+ intact calmodulin interacts with caldesmon and calponin with apparent Kd values equal to 0.23 and 1.3 microM respectively