CDP + [thioredoxin]-dithiol => dCDP + [thioredoxin]-disulfide + H2O
cdp + [thioredoxin]-dithiol => dcdp + [thioredoxin]-disulfide + h2o
CDP + [thioredoxin]-dithiol => dCDP + [thioredoxin]-disulfide + H2O
cdp + [thioredoxin]-dithiol => dcdp + [thioredoxin]-disulfide + h2o