Gluconeogenesis I. Background A. Definition B. Why C. Where D. Precursors II. Overview A. E requirements B. Reactions III. The 3 Crucial steps A. Pyruvate -> PEP 1. Pyruvate carboxylase a. Structure 1) biotin 2) active sites b. Rxn c. Control d. Compartmentalization 2. PEPCK a. Structure b. Rxn c. Control 3. Notes B. FBPase-1 1. Cofactors 2. Rxn 3. Control C. Glucose 6-phosphatase 1. Rxn 2. Species & Cell type 3. Location IV. Precursors A. lactic acid B. aas C. glycerol D. Others V. Cost