Calmodulin is a ubiquitous 16.6kD protein found in all eukaryote cells that is involved with the control of a large number of calcium sensitive enzymes. It can bind to and regulate a number of different protein targets, thereby affecting many different cellular functions. Source: Bovine Brain Activity: More than 40,000 units/mg of protein. One unit will stimulate 0.016 activated units of phosphodiesterase, 35-cyclic nucleotide, P 0520, to 50% of the maximum activity of the enzyme when saturated with activator. Applications: Suitable for use in ELISA. Other applications not tested. Recommended Dilution: Optimal dilutions to be determined by the researcher. Storage and Stability: Lyophilized and reconstituted products may be stored at -20C. Stable for 6 months after receipt at -20C. Reconstitute with sterile ddH2O. Aliquot to avoid repeated freezing and thawing. Store at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.