Answers are grounded in this paper and cite their sources.
Reduction of hexavalent chromium (chromate) to less-toxic trivalent chromium was studied by using cell suspensions and cell-free supernatant fluids from Pseudomonas putida PRS2000. Chromate reductase activity was associated with soluble protein and not with the membrane fraction. The crude enzyme activity was heat labile and showed a Km of 40 microM CrO4(2-). Neither sulfate nor nitrate affected chromate reduction either in vitro or with intact cells.
No takes yet. Share an insight, caveat, or question.
Ishibashi et al. (1990) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: