Purine nucleoside phosphorylase. Structure-activity relationships for substrate and inhibitor properties of N-1-, N-7-, and C-8-substituted analogues; differentiation of mammalian and bacterial enzymes with N-1-methylinosine and guanosine
1988
Bzowska, A.; Kulikowska, E.; Darzynkiewicz, E.; Shugar, D.