G. Hobbs, R. N. Manchester, L. Toomey and A. Kapur Csiro Space & Astronomy, Australia Telescope National Facility, PO Box 76, Epping, NSW 1710, Australia
This enzyme is responsible for the de novo conversion of ribonucleoside diphosphates into deoxyribonucleoside diphosphates, which are essential for DNA synthesis and repair.