At4g14640: CAM8 (CALMODULIN 8)

encodes a divergent member of calmodulin, which is an EF-hand family of Ca2 -binding proteins. This gene is expressed in leaves, flowers and siliques. The gene functionally complements yeast calmodulin 1 (CAM1). Also the protein does not form formed a complex with a basic amphiphilic helical peptide in the presence of Ca2 in vitro. Authors suggest that this gene may represent a Ca2 -binding sensor protein that interacts with a more limited set of target proteins than do more conventional CaM isoforms.