What is the concentration of calcium ions in the endoplasmic reticulum?
Consideration of the data from a number of sources indicates that the concentration of Ca2+ in the endoplasmic reticulum is very high and perhaps in the mM range. A number of implications flow from this-an important one being that the magnitude of Ca2+ gradients across the endoplasmic and plasma membranes are very similar.
Bygrave
F L
FL
Division of Biochemistry and Molecular Biology, Faculty of Science, Australian National University, Canberra ACT, Australia.
Benedetti
A
A
D002118:Calcium / Q000032:analysis* / Q000378:metabolism; D002451:Cell Compartmentation; D003600:Cytosol / Q000737:chemistry; D004721:Endoplasmic Reticulum / Q000737:chemistry*; D009994:Osmolar Concentration; D015398:Signal Transduction
D002118:Calcium