Consider the apical location of protein A expressed in epith…

Consider the apical location of protein A expressed in epithelial cells, illustrated in part A of Figure 11-36. When a molecule that chelates (binds to) calcium is added to the cell culture medium, you observe a redistribution of protein A around the entire cell, shown in part B of Figure 11-36. Which is most likely to be true about the role of calcium in maintaining an apical distribution of protein A?   Figure 11-36