53. Which of the following is NOT a property of phosphoglucoisomerase? (A) The carbonyl oxygen of glucose-6-phosphate is shifted from position C-1 to C-2. (B) The enzyme catalyzes the conversion of glucose-6-phosphate to glucose-1- phosphate. (C) The reaction involves the opening of the pyranose ring. (D) The reaction involves an aldose and a ketose. (E) The reaction involves the formation of an enediol intermediate.