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A possible mechanism of the formation and accumulation of 2':3'-ribonucleoside cyclophosphates in water-deficient wheat leaves



A possible mechanism of the formation and accumulation of 2':3'-ribonucleoside cyclophosphates in water-deficient wheat leaves



Fiziologiya Rastenii 36(2): 351-364



A possible mechanism of the formation of the 2':3'-cyclic form of ribonucleoside monophosphates in water-deficient wheat leaves was studied. The cytosol RNase of partially dehydrated plants lost capability of catalysing the second step of RNA depolymerization, viz. the hydrolysis of 2':3' ribonucleoside cyclophosphates with the formation of non-cyclic 3'-form of those compounds. As a result, the end products of RNAase action were 2':3'-ribonucleoside cyclophosphates.

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