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Keyword - Porin (KW-0626)

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Membrane protein which in a multimeric form constitutes a water-filled transmembrane channel (a pore). This pore allows the passage of ions and numerous other, non-specific molecules through the membrane. Found in the mitochondrial and plastid outer membrane of eukaryotes, in many Gram-negative bacteria, at least some Corynebacterineae, archaea and in sea anemones.


Molecular function

Gene Ontology


porin activity [ GO:0015288 ]
pore complex [ GO:0046930 ]


PorinIon transportMembraneMolecular functionDomainTransmembraneTransportCellular componentBiological process
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