id | GO:0022838   Detailed information
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  name | substrate-specific channel activity
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  namespace | molecular_function
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  def | "Catalysis of energy-independent facilitated diffusion, mediated by passage of a specific solute through a transmembrane aqueous pore or channel. Stereospecificity is not exhibited but this transport may be specific for a particular molecular species or class of molecules." [GOC:mtg_transport]
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  is_a | GO:0015267 ! channel activity
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  is_a | GO:0022891 ! substrate-specific transmembrane transporter activity
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