R24571,a special inhibitor of calmodulin,had no effect on membrane Ca 2+ ATPase activity. Calmodulin also could not promote the basic Ca 2+ ATPase activity of membrane.

• 钙调素特异性抑制剂R24571对Zn2+ 诱导的Ca2+ -ATPase活性无影响,钙调素对膜Ca2+ -ATP酶基础活性也无激活作用;