examination of the interaction of major tranquilizers with calmodulin results in the generalization that the functional nature of calcium binding helix-loop-helix regions found in several calcium binding proteins including calmodulin , troponin c and parvalbumin is dependent upon the topography of the hydrophobic and hydrophilic regions on the amphiphilic n-terminal alpha-helix of the helix-loop-helix conformation formed by the binding of the calcium cation to these proteins .
C0006732
calcium binding proteins
C0077400
troponin c