Cytokinin riboside 5'-monophosphate phosphoribohydrolase

UniProtKB accession:  O05306

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Catalyzes the hydrolytic removal of ribose 5'-monophosphate from nitrogen N6-modified adenosines, the final step of bioactive cytokinin synthesis. Is involved in the synthesis of isopentenyladenine (iP) and 2-methylthio-iP (2MeS-iP), the most abundant cytokinins detected in M.tuberculosis lysates and supernatants. Is also able to convert trans-zeatin-riboside monophosphate (tZRMP) to trans-zeatin (tZ) in vitro; however, it may not be involved in the biosynthesis of this minor cytokinin in vivo. Accumulation of Rv1205 sensitizes M.tuberculosis to nitric oxide since cytokinin breakdown products synergize with NO to kill M.tuberculosis. Shows a slow AMP hydrolase activity, but is not able to hydrolyze ATP. Displays no lysine decarboxylase (LDC) activity (L-lysine conversion to cadaverine).