BCHM 316 Chapter Notes - Chapter **15.1: Skeletal Muscle, Tryptophan, Pyruvic Acid
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1. Pyruvate + HCO3- + ATP → oxaloacetate + ADP + Pi ; pyruvate
carboxylase (irreversible)
Liver, kidney
In order to form oxaloacetate from pyruvate, you add a carboxyl group
2. PEP ← → oxaloacetate ; PEP carboxykinase, PEP carboxylase
a. PEP + CO2 + GDP ⇒ oxaloacetate + GTP ; PEP carboxykinase
i. Heart, skeletal muscle
b. PEP + HCO3- ⇒ oxaloacetate + Pi ; PEP carboxylase
i. Higher plants, yeast, bacteria
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