1.13.11.20 2,2'-dipyridyl slight activation at 0.01 mM 439546 1.13.11.20 8-hydroxyquinoline slight activation at 0.01 mM 439546 1.13.11.20 Carboxyethyl-L-cysteine at 10 mM, activation 439542 1.13.11.20 carboxymethyl-L-cysteine at 10 mM, activation 439542 1.13.11.20 cysteamine - 439548 1.13.11.20 cysteamine at 100 mM, activation 439542 1.13.11.20 cysteamine at a reaction time of 45 min, CDO activity increases almost 20times in the presence of 5.8 mM cysteamine 674569 1.13.11.20 cysteine protein expression of recombinant wild-type enzyme in HepG2/C3A cells increases by 160% when extracellular cysteine levels are increased from 0 to 1 mM cysteine 684337 1.13.11.20 D-cysteine at 10 mM, activation 439542 1.13.11.20 diethyldithiocarbamate without protein-A: 30% activation at 0.1 mM 439548