this enzyme ( molecular weight 59,000 +/- 3,000 ) deribosylates the ribonucleosides at an optimum ph of 4.7 k ( m ) values for the cytokinin nucleoside and adenosine are 2.38 and 1.43 micromolar , respectively , in 50 millimolar tris-citrate buffer ( ph 4.7 ) at 30 c .
C0035546
ribonucleosides
C0028621
nucleoside