Diverse functional evolution of serine decarboxylases: Identification of two novel acetaldehyde synthases that uses hydrophobic amino acids as substrates

Type II pyridoxal 5′-phosphate decarboxylases are an important group of phylogenetically diverse enzymes involved in amino acid metabolism. Within plants, this group of enzymes is represented by aromatic amino acid decarboxylases, glutamate decarboxylases and serine decarboxylases.