| Literature DB >> 11166566 |
Abstract
Ribonucleotide reductases (RNRs) catalyze the conversion of both purine and pyrimidine nucleotides to deoxynucleotides in all organisms and provide all the monomeric precursors essential for both DNA replication and repair. RNRs have been divided into three classes on the basis of their unique metallo-cofactors. The exquisitely controlled free radical chemistry used by all RNRs, and the commonality of the structures of the subunits where the nucleotide reduction process occurs, together provide compelling evidence for the importance of chemistry in the divergent evolution of RNRs from a common progenitor.Entities:
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Year: 2001 PMID: 11166566 DOI: 10.1016/s0968-0004(00)01764-3
Source DB: PubMed Journal: Trends Biochem Sci ISSN: 0968-0004 Impact factor: 13.807