BIOL 2083 Study Guide - Glycogen Phosphorylase, Glycogen Synthase, Cori Cycle
Document Summary
Cori cycle: a pathway in carbohydrate metabolism that links glycolysis in the liver with gluconeogenesis in the liver. Debranching enzyme: an enzyme that hydrolyzes the linkages in a branched-chain polymer such as amylopectin. Gluconeogenesis: the pathway of synthesis of glucose from lactate. Hexose monophosphate: shunt a synonym for the pentose phosphate pathway, in which glucose is converted to five-carbon sugars with concomitant production of nadph. Phosphorolysis: the addition of phosphoric acid across a bond, such as the glycosidic bond in glycogen, giving glucose phosphate and a glycogen remainder one residue shorter; it is analogous to hydrolysis (addition of water across a bond) Pentose phosphate pathway: a pathway in sugar metabolism that gives rise to five-carbon sugars and nadph. Substrate cycling: the control process in which opposing reactions are catalyzed by different enzymes. Transaldolase: an enzyme that transfers a two-carbon unit in reactions of sugars. Glycogen can readily be broken down to glucose in response to energy needs.
