Because in different conditions pyruvate carboxylase can either catalyzes the fi
ID: 67067 • Letter: B
Question
Because in different conditions pyruvate carboxylase can either catalyzes the first reaction committed to gluconeogenesis or inhibit the process, whereas PEPCK catalyzes the first reaction at any conditions. Because the process of regulation of gluconeogenesis at the level of control of enzyme synthesis by pyruvate carboxylase has much higher energy barrier for activation than in case of PEPCK. Because pyruvate carboxylase has two metabolic roles: replenishment of citric acid cycle intermediates and initiation of gluconeogenesis. PEPCK catalyzes the first reaction committed to gluconeogenesis. Because the concentration of pyruvate carboxylase is low. If it is a the primary target for the regulation of gluconeogenesis the lack of pyruvate carboxylase would cause CO2 deactivation which affects the photosynthesis. Because in different conditions pyruvate carboxylase can either catalyzes the first reaction committed to gluconeogenesis or inhibit the process, whereas PEPCK catalyzes the first reaction at any conditions. Because the process of regulation of gluconeogenesis at the level of control of enzyme synthesis by pyruvate carboxylase has much higher energy barrier for activation than in case of PEPCK. Because pyruvate carboxylase has two metabolic roles: replenishment of citric acid cycle intermediates and initiation of gluconeogenesis. PEPCK catalyzes the first reaction committed to gluconeogenesis. Because the concentration of pyruvate carboxylase is low. If it is a the primary target for the regulation of gluconeogenesis the lack of pyruvate carboxylase would cause CO2 deactivation which affects the photosynthesis.Explanation / Answer
Because pyruvate carboxylase has two metabolic roles: replenishment of citric acid cycle intermediates and initiation of gluconeogenesis. PEPCK catalyzes the first reaction committed to gluconeogenesis.