Escherichia coli K-12 substr. MG1655 Gene-Ontology-Terms Class: GO:0015288 - porin activity

Synonyms: porin

Definition: Catalysis of the transfer of substances, sized less than 1000 Da, from one side of the 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.

Parent Classes:
GO:0022829 - wide pore channel activity

Child Classes:
GO:0015471 - nucleoside-specific channel forming porin activity (1),
GO:0015473 - fimbrial usher porin activity (10),
GO:0015478 - oligosaccharide transporting porin activity (2),
GO:0015481 - maltose transporting porin activity (2),
GO:0015483 - long-chain fatty acid transporting porin activity (1)

Term Members:
outer membrane porin G (ompG),
N-acetylneuraminic acid outer membrane channel (nanC),
nucleoside channel; receptor of phage T6 and colicin K (tsx),
copper / silver efflux system - outer membrane porin (cusC),
predicted lipoprotein (yddL),
chitobiose outer membrane porin (chiP),
predicted outer membrane porin L (ompL),
carbohydrate-specific outer membrane porin, cryptic (bglH),
outer membrane porin protein; locus of qsr prophage (nmpC),
predicted exopolysaccharide export protein (gfcE),
lipoprotein required for capsular polysaccharide translocation through the outer membrane (wza),
OmpC monomer,
vitamin B12 / E colicin / bacteriophage BF23 outer membrane porin BtuB,
OmpF monomer,
TolC monomer,
membrane-associated protein (uidC),
outer membrane porin A (ompA),
outer membrane pore protein N, non-specific (ompN)

Unification Links: GO:0015288

Relationship Links: Wikipedia:RELATED-TO:Porin_(protein)

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Please cite the following article in publications resulting from the use of EcoCyc: Nucleic Acids Research 41:D605-12 2013
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