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- W2012512658 abstract "Ribonucleotide reductases are enzymes that catalyze the conversion of ribonucleotides to 2‘-deoxyribonucleotides. This important reaction is initiated by the generation of a C-3‘ nucleotide radical and subsequent loss of the 2‘-hydroxyl group. In order to model certain steps in this mechanism, selenol ester 23 was prepared and photolyzed providing the first selective chemical access to the 3‘-adenosyl radical. From product analysis it could be shown that elimination of the 2‘-OH function readily takes place under general base catalysis. The rate coefficient for this reaction was determined by competition kinetics to be 1.5·106 s-1 in the presence of 1 M triethylammonium acetate buffer at pH 7. Without catalyst the elimination rate is about 103 times slower. It can be concluded that a similar mechanism is also feasible for the key steps of the enzyme catalyzed reaction." @default.
- W2012512658 created "2016-06-24" @default.
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- W2012512658 date "1997-03-01" @default.
- W2012512658 modified "2023-09-26" @default.
- W2012512658 title "Studies on the Mechanism of Ribonucleotide Reductases" @default.
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- W2012512658 doi "https://doi.org/10.1021/ja962974q" @default.
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