Source:http://linkedlifedata.com/resource/umls/id/C0039938
CSP: family of small (13 kD) electron carrier proteins which mediate a number of reactions, including the conversion of ribonucleotides (RNA precursors) to deoxyribonucleotides (DNA precursors) by ribonucleotide reductase.,MSH: Hydrogen-donating proteins that participates in a variety of biochemical reactions including ribonucleotide reduction and reduction of PEROXIREDOXINS. Thioredoxin is oxidized from a dithiol to a disulfide when acting as a reducing cofactor. The disulfide form is then reduced by NADPH in a reaction catalyzed by THIOREDOXIN REDUCTASE.