this plasma-membrane ca2+ pump from smooth muscle is controlled by cgmp via phosphorylation of a phosphatidylinositol kinase which phosphorylates phosphatidylinositol to phosphatidylinositol-monophosphate for which a specific binding site exists on the ca2+-transport atpase .
C0031715
phosphorylation
C0089793
phosphatidylinositol kinase