ID 4.2.3.154 DE demethyl-4-deoxygadusol synthase. CA D-sedoheptulose 7-phosphate = (R)-demethyl-4-deoxygadusol + H(+) + H2O + CA phosphate. CC -!- The enzyme, characterized from the cyanobacterium Nostoc punctiforme CC PCC 73102, is involved in the biosynthesis of the sunscreen compound CC shinorine. cf. EC 4.2.3.152 and EC 4.2.3.155. DR B2J6X9, DDGS_NOSP7 ; Q3M6C3, DDGS_TRIV2 ; //