id | GO:0022821   Detailed information
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  name | potassium ion antiporter activity
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  namespace | molecular_function
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  def | "Catalysis of the active transport of a potassium ion across a membrane by a mechanism whereby two or more species are transported in opposite directions in a tightly coupled process not directly linked to a form of energy other than chemiosmotic energy." [GOC:mtg_transport, ISBN:0815340729]
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  is_a | GO:0015079 ! potassium ion transmembrane transporter activity
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  is_a | GO:0015297 ! antiporter activity
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