Ca2+-binding modulator protein in protozoa and myxomycete.

Ca2+-binding protein with the properties of brain modulator protein of 3,5-cyclic nucleotide phosphodiesterase was identified in Physarum polycephalum plasmodia and in Euglena gracilis and Amoeba proteus cells by urea polyacrylamide gel electrophoresis and activation of cyclic nucleotide phosphodiesterase and of myosin light chain kinase.