FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term porin activity ID (Ontology) GO:0015288 (Gene Ontology)
Definition Enables the transfer of substances, sized less than 1000 Da, from one side of a membrane to the other. The transmembrane portions of porins consist exclusively of beta-strands which form a beta-barrel. They are found in the outer membranes of Gram-negative bacteria, mitochondria, plastids and possibly acid-fast Gram-positive bacteria.[ ISBN:0815340729 PubMed:10839820 ]
Also Known As "porin"
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Data ClassFieldDirect annotations
Genes (FBgn)GO_MOLECULAR_FUNCTION
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 porin activity (all annotations which use CV term, excluding "NOT" statements)
     enables | porin activity       --
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  channel activity
   |__wide pore channel activity
       |__porin activity  3 rec.
           |__autotransporter activity
           |__fimbrial usher porin activity
           |__long-chain fatty acid transporting porin activity
           |__maltose transporting porin activity
           |__nucleoside-specific channel forming porin activity
           |__oligosaccharide transporting porin activity
           |__toxin export channel activity
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Is a wide pore channel activity
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Synonyms
  • "outer membrane exporter porin" NARROW
    "porin" EXACT
Secondary IDs
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Reactome:R-HSA-9760573 "TolC complex exports STa"
Reactome:R-HSA-9911510 "MacA:MacB:TolC transports azithromycin from the periplasm to the extracellular region"
Reactome:R-HSA-9911516 "AcrA:AcrB:TolC transports antibiotics from the periplasm to the extracellular region"
Reactome:R-HSA-9914083 "MdtE:MdtF:TolC exports beta-lactams to extracellular space"
Reactome:R-HSA-9926021 "HlyB:HlyD:TolC transports HlyA from periplasm to extracellular space"
Wikipedia:Porin_(protein)