Possible Interaction: Nitrogen and Phenylalanine

“A loss of 5.5% was found for phenylalanine after 24 h of hydrolysis under nitrogen.”

“Methionine, threonine, phenylalanine , and tryptophane when singly eliminated from the complete amino acid mixture do effect a sharp rise in urinary nitrogen.”

“As compared with the control, the addition of isoleucine and aspartic acid as nitrogen sources were generally stimulative for mycelial dry weight production whereas phenylalanine was inhibitory irrespective to the tested fungal species.”

“The net degradation rate (&…;mol/g microbial nitrogen ) of Phe in B was about 1.5-fold higher than that in P. Phe was converted mainly into phenylacetic acid (PAA) and unknown compound(s) that presumably involved tyrosine in B, P, and BP during the 12 h incubation period.”

“Neurospora crassa possesses an inducible L-phenylalanine ammonia-lyase that is expressed only when cells are derepressed for nitrogen in the presence of L-phenylalanine.”

“Glucose has no effect on uptake of glycine and phenylalanine under anaerobic conditions, although it increases phenylalanine uptake when the cells are incubated under nitrogen.”