Results 341 to 350 of about 425,330 (380)

Synergistic Effect of a Thermal Reaction and Vacuum Dehydration on Improving Xylose-Phenylalanine Conversion to N-(1-Deoxy-d-xylulos-1-yl)-phenylalanine during an Aqueous Maillard Reaction.

Journal of Agricultural and Food Chemistry, 2018
The synergistic effect of a thermal reaction and vacuum dehydration on the conversion of xylose (Xyl) and phenylalanine (Phe) to a Maillard-reaction intermediate (MRI) was researched.
H. Cui, Khizar Hayat, C. Jia, E. Duhoranimana, Qingrong Huang, Xiaoming Zhang, Chi-Tang Ho   +6 more
semanticscholar   +1 more source

Fluorescence of the fluorinated phenylalanines

Analytical Biochemistry, 1962
Abstract Fluorinated phenylalanines are much more intensely fluorescent than phenylalanine or the corresponding chlorinated or brominated compounds. The p -derivative fluoreces with a quantum efficiency of 0.40. These compounds possess excitation maxima at about 268 mμ and fluoresce at about 292 mμ.
G, GUROFF, M A, CHIRIGOS
openaire   +2 more sources

Isozymes of Phenylalanine Hydroxylase

Science, 1972
Three isozymes of phenylalanine hydroxylase exist in adult rat liver. They are chromatographically unique. Partial characterization suggests that they are similar in chemical properties and differ only in charge. Estimation of the Stokes radii indicates that the isozymes have similar molecular weights of about 200,000. Two isozymes exist in human fetal
J A, Barranger, P J, Geiger, A, Huzino, S P, Bessman   +3 more
openaire   +2 more sources

Phenylalanine Hydroxylase Activity

Archives of Pediatrics & Adolescent Medicine, 1983
Sir .—In the article, "Diagnosis of Phenylalanine Hydroxylase Deficiency (Phenylketonuria)" (Journal1982;136:111-114), we are concerned by the recommendation of Berry and collegues that centers treating patients with phenylketonuria (PKU) should " . . .
D M, Danks, R G, Cotton
openaire   +2 more sources

Adsorption chromatography of phenylalanine

Biotechnology and Bioengineering, 1989
Utilisation de la resine Amberlite XAD-4 dans le but de retenir des acides amines aromatiques tels que la phenylalanine, a partir de l'hydrolyse acide de la caseine.
A M, de Hollanda e Vasconcellos, A L, Santos Neto, D M, Grassiano, C P, de Oliveira   +3 more
openaire   +2 more sources

THE EFFECTS OF PHENYLALANINE ANALOGUES ON THE METABOLISM OF PHENYLALANINE IN RATS

Canadian Journal of Biochemistry, 1967
Rats expired14CO2slightly faster when DL-phenylalanine-1-14C rather than DL-phenylalanine-3-14C was injected. An injection of DL-fluorophenylalanine-3-14C produced more radioactive CO2than did phenylalanine-3-14C; DL-beta-thienylalanine-3-14C produced only trace amounts of14CO2but significant levels of radioactivity in the urine.
Claude Godin, Gail Dolan
openaire   +1 more source

Redesign of a Phenylalanine Aminomutase into a Phenylalanine Ammonia Lyase

ChemCatChem, 2013
AbstractAn aminomutase, naturally catalyzing the interconversion of (S)‐α‐phenylalanine and (R)‐β‐phenylalanine, was converted into an ammonia lyase catalyzing the nonoxidative deamination of phenylalanine to cinnamic acid by a rational single‐point mutation.
Sebastian Bartsch, Gjalt G. Wybenga, Maaike Jansen, Matthew M. Heberling, Bian Wu, Bauke W. Dijkstra, Dick B. Janssen   +6 more
openaire   +1 more source

Characterization of phenylalanine hydroxylase

Biochemistry, 1986
Iron can be bound to phenylalanine hydroxylase (PAH) in two environments. The assignment of the electron paramagnetic resonance spectrum of PAH to two, overlapping high-spin ferric signals is confirmed by computer simulation. Both environments are shown to be populated in the crude enzyme.
L M, Bloom, S J, Benkovic, B J, Gaffney
openaire   +2 more sources

Phenylalanine hydroxylase deficiency

Genetics in Medicine, 2011
Phenylalanine hydroxylase deficiency is an autosomal recessive disorder that results in intolerance to the dietary intake of the essential amino acid phenylalanine. It occurs in approximately 1:15,000 individuals. Deficiency of this enzyme produces a spectrum of disorders including classic phenylketonuria, mild phenylketonuria, and mild ...
John J, Mitchell, Yannis J, Trakadis, Charles R, Scriver   +2 more
openaire   +2 more sources

The availability of D-phenylalanine and DL-phenylalanine

American Journal of Psychiatry, 1985
J G, Lofft, R H, Bridenbaugh
openaire   +2 more sources