2. Biosynthesis of Amino Acids

Organisms Vary Greatly in Their Ability to Synthesize the 20 Common Amino Acids

α-Ketoglutarate Gives Rise to Glutamate, Glutamine, Proline, and Arginine

Serine, Glycine, and Cysteine Are Derived from 3-Phosphoglycerate

Three Nonessential and Six Essential Amino Acids Are Synthesized from Oxaloacetate and Pyruvate

Chorismate Is a Key Intermediate in the Synthesis of Tryptophan, Phenylalanine, and Tyrosine

Histidine Biosynthesis Uses Precursors of Purine Biosynthesis

Amino Acid Biosynthesis Is under Allosteric Regulation