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This family of ATPase membrane proteins are involved in [[Active Transport - Physiology#Secondary Active Transport|Secondary Active Transport]].  They bind two molecules and transport them accross the membrane either in the same direction ('''symporter''') or in opposite directions ('''antiporter''').  The [[Active Transport - Physiology#Development of Potential Energy|potential energy]] derived from forcing one molecule across this allows the other co-transported molecule to be transported against its gradient.
 
This family of ATPase membrane proteins are involved in [[Active Transport - Physiology#Secondary Active Transport|Secondary Active Transport]].  They bind two molecules and transport them accross the membrane either in the same direction ('''symporter''') or in opposite directions ('''antiporter''').  The [[Active Transport - Physiology#Development of Potential Energy|potential energy]] derived from forcing one molecule across this allows the other co-transported molecule to be transported against its gradient.
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==More Information==
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If more information on Facilitated Diffusion is need it can be found [http://en.wikipedia.org/wiki/Passive_diffusion here]
 
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