ID 3.13.1.1 DE UDP-sulfoquinovose synthase. AN sulfite:UDP-glucose sulfotransferase. CA sulfite + UDP-alpha-D-glucose + H(+) = UDP-alpha-D-6-sulfoquinovose + CA H2O. CC -!- NAD(+) appears to oxidize the substrate to UDP-4-dehydroglucose, CC which dehydrates to UDP-4-dehydro-6-deoxygluc-5-enose, to which CC sulfite can add; the reaction is completed when the substrate is CC rehydrogenated at C-4. CC -!- The enzyme from Arabidopsis thaliana is specific for UDP-Glc and CC sulfite. DR Q4JBJ3, AGL3_SULAC ; O48917, SQD1_ARATH ; Q84KI6, SQD1_SPIOL ; //