CREATE TABLE table_52258 ("Location" TEXT, "Abb." TEXT, "Enzyme" TEXT, "Disorder" TEXT, "Measurements" TEXT)

What is the abbreviation of the enzyme involved in carbamoyl phosphate synthetase i deficiency?
SELECT "Abb." FROM table_52258 WHERE "Disorder" = 'carbamoyl phosphate synthetase i deficiency'
SELECT "Abb." FROM "table_52258" WHERE "Disorder" = 'carbamoyl phosphate synthetase i deficiency'