ID 2.4.1.220 DE indoxyl-UDPG glucosyltransferase. AN indoxyl-UDPG-glucosyltransferase. CA indoxyl + UDP-alpha-D-glucose = H(+) + indican + UDP. CC -!- Also acts to a limited extent on 4-, 5-, 6- and 7-hydroxyindole. CC -!- After enzymic or chemical hydrolysis, indican forms indoxyl, which, CC in turn, is converted in the presence of oxygen to the dye indigo. //