In the recent review article in the Current Opinion in Chemical Biology by Guenter Schwarz, our MoaC structure paper (PNAS 2015) was referenced and highlighted as an article of outstanding interest. This review paper nicely summarizes the current status of the research in Moco biosynthesis and human Moco deficiency disease. The author referenced four of our original research publication with the PNAS 2015 paper as the work that settled the discussion about the functions of MoaA and MoaC.