The report reviews the MoaD-MoaE molybdopterin synthase reaction and complex.
"The requirement for the thiocarboxylate form is strict: **only the thiocarboxylated MPT synthase complex is able to convert precursor Z to MPT in vitro** [PMID: 11459846](https://pubmed.ncbi.nlm.nih.gov/11459846/)."