title: Identification of a dephosphorylated oxidation product of the molybdenum cofactor as 2-(1,2-dihydroxyethyl)thieno[3,2-g]pterin.
abstract: A new method was developed for the synthesis of 2-(1,2-dihydroxyethyl)thieno[3,2-g]pterin and related 2-substituted thienopterins. A dephosphorylated fluorescent oxidation product of the molybdenum cofactor isolated from xanthine oxidase (EC 1.2.3.2) was identified as 2-(1,2-dihydroxyethyl)thieno[3,2-g]pterin by comparison of electronic and fluorescence spectra and TLC behaviors with those of the synthetic compound.
mesh_terms: D002855:Chromatography, Thin Layer; D003067:Coenzymes; D008667:Metalloproteins; D008982:Molybdenum / Q000302:isolation & purification*; D000090006:Molybdenum Cofactors; D010084:Oxidation-Reduction; D011621:Pteridines / Q000302:isolation & purification*; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet
chemical_list: D003067:Coenzymes; D008667:Metalloproteins; D008982:Molybdenum; D000090006:Molybdenum Cofactors; D011621:Pteridines; C022261:molybdopterin