ribonucleotide reductase

Ribonucleotide reductase (RNR) is an enzyme that controls the cellular concentration of deoxyribonucleotides. Biosynthesis begins with the building up of essential molecules that RNR processes in a catalyzed reaction to make deoxyribonucleotides. RNR assembles deoxyribonucleotides for the synthesis of DNA. The processes are identical in all living organisms. What makes RNR unique from other enzymes is the need for a free radical.
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Die Ribonukleotidreduktase (oft auch als RNR abgekürzt) ist ein Enzym, welches das letzte Glied in der Kette der Synthese der DNA-Bausteine bildet. Es reduziert die 2'-Hydroxylgruppe von Nukleotiden.
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‎ مُخْتَزَلَةُ الرِّيبونوكليوتيد‎

a viral enzyme which cuts ribonucleotides in order to create deoxyibonucleotides, the building blocks of DNA. Ribonucleotide reductase is essential for DNA replication. Drugs (e.g., hydroxyurea) that inhibit ribonucleotide reductase may enhance the activity of nucleoside analogs drugs.