Secondary Products Derived from Glycine, L-Serine, and -Alanine

Glycine (2-aminoacetic acid), L-serine [(S)-2-amino-3-hydroxypropionic acid] and L-alanine [(S)-2-aminopropionic acid] are simple -amino acids. The secondary products derived 

Secondary products derived from glycine, L-serine, and L-alanine are formed in microorganisms, plants, and animals. 

L-Serine and L-alanine are built from D-glyceric acid 3-phosphate (D 2) by the pathway given in Fig. 166. Glycine is formed from glyoxylic acid which may be 

1 Phosphoglycerate dehydrogenase 2 phosphoserine aminotransferase 3 phosphoserine phosphatase 4 serine hydroxymethyltransferase 5 glycine aminotransferase 6 phosphoglyceromutase, enolase, pyruvate kinase (Fig. 44) 7 alanine oxoacid aminotransferase 

The following groups of secondary products are derived from glycine and L-serine  

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