Binding Sites Calcium Calmodulin Computer Simulation Drosophila Proteins Fluorescence Melatonin Models, Molecular Molecular dynamics Motion NMR Nuclear Magnetic Resonance, Biomolecular Protein Binding Weak interactions amino terminal sequence article binding affinity calcium calmodulin carboxy terminal sequence correlation analysis fluorescence spectroscopy melatonin molecular dynamics molecular interaction monitoring nuclear magnetic resonance spectroscopy priority journal protein domain protein interaction