Antiporter
From Wikipedia, the free encyclopedia
An antiporter is an integral membrane protein that is involved in secondary active transport.
It works by binding to one molecule of solute outside the membrane, and one molecule on the inside. By using S2's gradient, it is able to transport S1 against its gradient.
Antiporter may also refer to a membrane protein that pumps two solutes in opposite directions across the membrane even if both solutes are being transported up their electrochemical gradient. Example: Na+ K+ pump.
[edit] See also
[edit] External links
- Flash animation at McGraw-Hill biochemistry-Cotransport
- Dictionary at eMedicine antiport
- MeSH Antiporters
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Symporter: Na+/K+/2Cl- - Na/Pi3 - Na+/Cl- - Na/glucose
Antiporter (exchanger): Na+/H+ - Na+/Ca2+ - Cl-/HCO3- (Band 3)
ATPase: H+ (F-type) - H+ (V-type) - H+/K+ - Na+/K+ - Ca+ (SERCA, Plasma membrane)
