Superimposition between cCTnC•resveratrol (light blue) and a. cCTnC (red; pdb: 3ctn), b. cCTnC•EMD 57033 (pink; pdb: 1ih0), c. cCTnC•EGCg (magenta; pdb: 2kdh), and d. cCTnC•cTnI34–71 (orange; pdb: 1j1d). The carbon atoms for resveratrol are colored in yellow, and the oxygen atoms are colored in red. For the other structures, ligand carbon atoms are colored in blue, oxygen atoms in red, nitrogen atoms in dark blue, and sulfur atoms in yellow. Ca2+ ions are shown as black spheres.