Fig 17.8 Biosynthesis of amino acids

Table 17.1

A. Alanine, Asparagine, Aspartate, Glutamate and Glutamine Pyruvate is the amino-group acceptor in alanine synthesis

Oxaloacetate is the amino-group acceptor in the synthesis of aspartate

Synthesis of asparagine

B. Serine, Gycine, and Cysteine Fig 17.9 Serine is derived from the glycolytic intermediate 3-phosphoglycerate

Fig 17.9 (continued) (from previous slide)

Fig 17.10 Biosynthesis of glycine

Fig 17.11 Compounds formed from serine and glycine

Fig 17.12 Cysteine biosynthesis from serine in bacteria, plants

Fig 17.13 Cysteine biosynthesis in mammals

17.5 Synthesis of Essential Amino Acids Pathways have largely been determined from studies with bacteria Plants are thought to synthesize essential amino acids by similar pathways

D. Tyrosine Fig 17.15 (continued next slide)