Biosynthesis of phenylalanine and tyrosine in claviceps.
Some enzymes of the terminal steps of phenylalanine and tyrosine biosyntheses were investigated in various alkaloid-forming ergot strains. All strains studied utilize both arogenate and phenylpyruvate as an intermediate in L-phenylalanine synthesis. L-Tyrosine is preferentially or exclusively synthesized via the arogenate pathway. No feedback inhibition of arogenate pathway enzymes by aromatic amino acids was observed.
Schmauder
H P
HP
Friedrich-Schiller-University, Department of Biology, DDR-6900 Jena, German Democratic Republic.
Gröger
D
D