The molecule is moCo in eukaryotic sulfite oxidase. It is a molybdopterin cofactor and a Mo-molybdopterin cofactor. It derives from a sulfurated eukaryotic molybdenum cofactor(2-).
[(5aR,8R,9aR)-2-amino-4-oxo-6,7-disulfido-3,5,5a,8,9a,10-hexahydropyrano[3,2-g]pteridin-8-yl]methyl phosphate;(2R)-2-amino-3-hydroxy-3-oxopropane-1-thiolate;dioxomolybdenum