Ca2+-activated ATPase and ATP-dependent calmodulin-stimulated Ca2+ transport in islet cell plasma membrane

Abstract
Ca plays an essential part in the regulation of insulin secretion in the pancreatic .beta. cell. Ca influx/efflux studies indicate that glucose promotes an accumulation of Ca by the .beta. cell. The presence of a high affinity (Ca2+ + Mg2+)ATPase and ATP-dependent calmodulin-stimulated Ca transport system in rat pancreatic islet cell plasma membranes is reported.