So once our glucose is transformed into glucose phosphate, it stays within the cytoplasm of that cell. The second reason why we have to phosphorylate our glucose is to transform the glucose from the low energy stable form into a less stable form. So we destabilize the glucose by adding the phosphate group. So we create this negatively charged group on the glucose and then destabilizes our molecule and that will help us break down the molecule in stage two. So step two of stage one involves transforming the six membered sugar glucose into the five membered isomer, the fructose. So we use an enzyme known as phosphorlucose isomerase and we basically transform glucose six phosphate into fructose six phosphate.