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Enables the energy independent passage of nucleoside, sized less than 1000 Da, across a membrane. 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. Catalysis of the transfer of a pyrimidine nucleoside, a pyrimidine base covalently bonded to a ribose or deoxyribose sugar from one side of a membrane to the other. Catalysis of the transfer of a nucleoside, from one side of a membrane to the other, up a concentration gradient. Catalysis of the transfer of a nucleoside, a nucleobase linked to either beta-D-ribofuranose (ribonucleoside) or 2-deoxy-beta-D-ribofuranose, (a deoxyribonucleotide) from one side of a membrane to the other. Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: nucleoside(out) + H+(out) = nucleoside(in) + H+(in). Catalysis of the transfer of a nucleoside, from one side of a membrane to the other, down the concentration gradient. Enables the transfer of a specific substance or group of related substances from one side of a membrane to the other. Catalysis of the transfer of nicotinamide riboside, which is a pyridine-3-carboxamide covalently bonded to a ribose sugar, from one side of a membrane to the other. Catalysis of the transfer of a purine nucleoside, a purine base covalently bonded to a ribose or deoxyribose sugar, from one side of a membrane to the other. Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: nucleoside(out) + Na+(out) = nucleoside(in) + Na+(in). Catalysis of the transfer of nucleobases, nucleosides, nucleotides and nucleic acids from one side of a membrane to the other.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: nucleoside transmembrane transporter activity
Acc: GO:0005337
Aspect: Molecular Function
Desc: Catalysis of the transfer of a nucleoside, a nucleobase linked to either beta-D-ribofuranose (ribonucleoside) or 2-deoxy-beta-D-ribofuranose, (a deoxyribonucleotide) from one side of a membrane to the other.
Synonyms:
  • intracellular nucleoside transmembrane transporter activity
Proteins in PDR annotated with:
   This term: 66 [Search]
   Term or descendants: 99 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0005337 - nucleoside transmembrane transporter activity (interactive image map)
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