Fig. 1

General structure of different calcium binding sensor protein. (a) An Arabidopsis thaliana CPK protein contain kinase domain and four calcium binding EF-hands, (b) human calmodulin (CaM) protein contains four EF hands, (c) Arabidopsis thaliana CaM2 protein contains four EF-hands, (d) rice CBL protein contains three EF-hands. From this figure it is clear that, CaM protein contain four calcium binding EF hands where as CBL protein contains three. The human CaM protein is shown here to identify the exact similarity between human and plant CaM protein and differences between plant CaM and CBL protein. The proteins were scanned in SCAN PROSITE (http://prosite.expasy.org/scanprosite/) software to check for the presence of calcium binding EF- hands