Discuss how the structure of the SERCA Ca ion pump allows for the passage of Ca across the membrane. Make sure you detail the mechanism of transfer, where does the energy story come in, timing of shape shifts, etc.

Discuss how the structure of the SERCA Ca ion pump allows for the passage of Ca across the membrane. Make sure you detail the mechanism of transfer, where does the energy story come in, timing of shape shifts, etc.

Biochemistry

6th Edition

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Reginald H. Garrett, Charles M. Grisham

Chapter20: Electron Transport And Oxidative Phosphorylation

Section: Chapter Questions

Problem 22P

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Concept explainers

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.

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Discuss how the structure of the SERCA Ca ion pump allows for the passage of Ca across the
membrane. Make sure you detail the mechanism of transfer, where does the energy story
come in, timing of shape shifts, etc.

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