| http://linkedlifedata.com/r... | skos:definition | "Combining with a purine or purine derivative (purine nucleoside or purine nucleotide) and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity. A nucleotide is a compound that consists of a nucleoside esterified with a phosphate molecule." [GOC:bf, GOC:BHF, GOC:signaling, PMID:9755289] | lld:geneontology |
