Fig. 9B: Active Transport: Antiporter

Antiporters are transport proteins that simultaneously transport two substances across the membrane in opposite directions; one against the concentration gradient and one with the concentration gradient. Antiporters typically use proton motive force to transport a substrate across the membrane. The movement of protons across the membrane (proton motive force) provides the energy for transporting the substrate across the membrane against its concentration gradient..

Illustration of Active Transport by an Antiporter.jpg by Gary E. Kaiser, Ph.D.
Professor of Microbiology, The Community College of Baltimore County, Catonsville Campus
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Last updated: Feb., 2018
Please send comments and inquiries to Dr. Gary Kaiser