Antiporter: Difference between revisions
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this image shows an antiporter in action moving sodium and hydrogen ions. |
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A transporter that uses the energy stored in the [[Electrochemical gradient|electrochemical gradient]] of one [[Solute|solute]] to drive the movement of another solute 'uphill' against its [[Electrochemical gradient|electrochemical gradient]]. The tight coupling of the transport of two different solutes allows the protein to harvest the [[Free energy|free energy]] released from the 'downhill' movement to power the movement of the other solute up its electrochemical gradient in the opposite direction<ref>Alberts et al.(2008)Molecular Biology of the Cell,5th Edition: p656</ref>. For example, the transport of [[Glucose|glucose]] against its concentration gradient can be coupled to the movement of [[Sodium|sodium]] [[Ions|ions]] down their [[ | A transporter that uses the energy stored in the [[Electrochemical gradient|electrochemical gradient]] of one [[Solute|solute]] to drive the movement of another solute 'uphill' against its [[Electrochemical gradient|electrochemical gradient]]. The tight coupling of the transport of two different solutes allows the protein to harvest the [[Free energy|free energy]] released from the 'downhill' movement to power the movement of the other solute up its electrochemical gradient in the opposite direction<ref>Alberts et al.(2008)Molecular Biology of the Cell,5th Edition: p656</ref>. For example, the transport of [[Glucose|glucose]] against its concentration gradient can be coupled to the movement of [[Sodium|sodium]] [[Ions|ions]] down their [[Electrochemical gradient|electrochemical gradient]], where glucose moves in the opposite direction across the membrane to sodium<ref>Alberts et al.(2008)Molecular Biology of the Cell,5th Edition: p657, figure 11-9</ref>. [[Symporter|Also see symporter]]. | ||
=== | === [[Image:Antiporter image, wiki page.JPG|This image shows an antiporter moving sodium ions and protons across a cell membrane]]<ref>The cell: A molecular approach 2nd edition.Cooper GM. Sunderland (MA): Sinauer associates; 2000. Figure 12.33</ref> === | ||
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Revision as of 16:08, 5 December 2017
A transporter that uses the energy stored in the electrochemical gradient of one solute to drive the movement of another solute 'uphill' against its electrochemical gradient. The tight coupling of the transport of two different solutes allows the protein to harvest the free energy released from the 'downhill' movement to power the movement of the other solute up its electrochemical gradient in the opposite direction[1]. For example, the transport of glucose against its concentration gradient can be coupled to the movement of sodium ions down their electrochemical gradient, where glucose moves in the opposite direction across the membrane to sodium[2]. Also see symporter.
References