Interaction of smooth muscle caldesmon with phospholipids
- 17 December 1990
- journal article
- Published by Wiley in FEBS Letters
- Vol. 277 (1-2) , 134-136
- https://doi.org/10.1016/0014-5793(90)80827-6
Abstract
Taking into account the perimembrane localization of caldesmon [(1986) Nature 319, 68] and its ability to participate in the regulation of receptor clusterization [(1989) J. Biol. Chem. 264, 496], we studied the interaction of duck gizzard caldesmon with soybean phospholipids (azolectin). By using four independent methods, i.e. light scattering, gel-electrophoresis, gel-filtration and ultracentrifugation, we showed a Ca-independent complex formation between caldesmon and azolectin. Interacting with caldesmon, calmodulin is shown to dissociate the caldesmon-azolectin complex. It is supposed that the caldesmon-phospholipid interaction may affect caldesmon phosphorylation by Ca-phospholipid-dependent protein kinase. This effect may be important for various cell motility processes.Keywords
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