Protein-coding gene in the species Homo sapiens
Ribonucleoside-diphosphate reductase subunit M2, also known as ribonucleotide reductase small subunit, is an enzyme that in humans is encoded by the "RRM2" gene.
Function.
This gene encodes one of two non-identical subunits for ribonucleotide reductase. This reductase catalyzes the formation of deoxyribonucleotides from ribonucleotides. Synthesis of the encoded protein (M2) is regulated in a cell-cycle dependent fashion. Transcription from this gene can initiate from alternative promoters, which results in two isoforms that differ in the lengths of their N-termini.
Interactive pathway map.
"Click on genes, proteins and metabolites below to link to respective articles." 
Fluorouracil (5-FU) Activity edit
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References.
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Further reading.
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"This article incorporates text from the United States National Library of Medicine, which is in the public domain."