Profilins Purified from Higher Plants Bind to Actin from Cardiac Muscle and to Actin from a Green Alga

摘要

Profilins purified fromZea maystransiently enhance the viscosity of polymerizing cardiac actin at ratios (profilin : actin)<1, but lower the viscosity at higher ratios. Specific binding of actin from the algaChara corallinato higher plant profilins suggests strict conservation of interaction between both proteins in plants.