EOG8G4K56 GO:0004731 9/9 purine-nucleoside phosphorylase activity molecular_function "Catalysis of the reaction: purine nucleoside + phosphate = purine + alpha-D-ribose 1-phosphate." [EC:2.4.2.1] EOG8G4K56 GO:0009116 9/9 nucleoside metabolic process biological_process "The chemical reactions and pathways involving a nucleoside, a nucleobase linked to either beta-D-ribofuranose (a ribonucleoside) or 2-deoxy-beta-D-ribofuranose, (a deoxyribonucleoside), e.g. adenosine, guanosine, inosine, cytidine, uridine and deoxyadenosine, deoxyguanosine, deoxycytidine and thymidine (= deoxythymidine)." [GOC:ma]