Figure 15-38. The main ways eucaryotic cells maintain a very low concentration of free Ca2+in their cytosol.

Figure 15-38The main ways eucaryotic cells maintain a very low concentration of free Ca2+in their cytosol

(A) Ca2+ is actively pumped out of the cytosol to the cell exterior. (B) Ca2+ is pumped into the ER and mitochondria, and various molecules in the cell bind free Ca2+ tightly.

From: Signaling through G-Protein-Linked Cell-Surface Receptors

Cover of Molecular Biology of the Cell
Molecular Biology of the Cell. 4th edition.
Alberts B, Johnson A, Lewis J, et al.
New York: Garland Science; 2002.
Copyright © 2002, Bruce Alberts, Alexander Johnson, Julian Lewis, Martin Raff, Keith Roberts, and Peter Walter; Copyright © 1983, 1989, 1994, Bruce Alberts, Dennis Bray, Julian Lewis, Martin Raff, Keith Roberts, and James D. Watson .

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