What is the enzyme involved in the disorder of Ornithine Transcarbamylase deficiency?
CREATE TABLE "the_six_urea_cycle_disorders" (
  "location" text,
  "abb" text,
  "enzyme" text,
  "disorder" text,
  "measurements" text
);
SELECT "enzyme" FROM "the_six_urea_cycle_disorders" WHERE "disorder"='ornithine transcarbamylase deficiency';