Calmodulin (CaM)
•
16.8 kDa Ca
2+
-binding protein
•
Highly conserved in all eukaryotes
•
Up to 1% of protein
•
Binds 4 mol Ca
2+
/mol
•
Binding affinity ~ .25-1x10
6
M
–
Cooperativity with Hill constant ~ 2