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. Related pseudogenes have been identified on chromosomes 1
Provides the precursors necessary for DNA synthesis. Catalyzes the biosynthesis of deoxyribonucleotides from the corresponding ribonucleotides. Inhibits Wnt signaling.