• Thumbnail for Phenylalanine
    Phenylalanine (symbol Phe or F) is an essential α-amino acid with the formula C 9H 11NO 2. It can be viewed as a benzyl group substituted for the methyl...
    28 KB (2,386 words) - 16:28, 30 March 2024
  • Thumbnail for Phenylalanine hydroxylase
    Phenylalanine hydroxylase (PAH) (EC 1.14.16.1) is an enzyme that catalyzes the hydroxylation of the aromatic side-chain of phenylalanine to generate tyrosine...
    31 KB (3,684 words) - 17:24, 12 April 2024
  • Thumbnail for Phenylketonuria
    of metabolism that results in decreased metabolism of the amino acid phenylalanine. Untreated PKU can lead to intellectual disability, seizures, behavioral...
    58 KB (6,160 words) - 08:17, 23 March 2024
  • Thumbnail for Phenylalanine decarboxylase
    The enzyme phenylalanine decarboxylase (EC 4.1.1.53) catalyzes the chemical reaction L-phenylalanine ⇌ {\displaystyle \rightleftharpoons } phenethylamine...
    2 KB (139 words) - 15:21, 26 August 2023
  • Thumbnail for Aspartame
    substitute in foods and beverages. It is a methyl ester of the aspartic acid/phenylalanine dipeptide with brand names NutraSweet, Equal, and Canderel. Aspartame...
    59 KB (5,632 words) - 05:04, 12 May 2024
  • In enzymology, a phenylalanine dehydrogenase (EC 1.4.1.20) is an enzyme that catalyzes the chemical reaction L-phenylalanine + H2O + NAD+ ⇌ {\displaystyle...
    2 KB (207 words) - 15:21, 26 August 2023
  • Thumbnail for Phenylalanine ammonia-lyase
    enzyme phenylalanine ammonia lyase (EC 4.3.1.24) catalyzes the conversion of L-phenylalanine to ammonia and trans-cinnamic acid.: L-phenylalanine = trans-cinnamate...
    20 KB (2,162 words) - 08:47, 30 October 2023
  • In enzymology, a phenylalanine(histidine) transaminase (EC 2.6.1.58) is an enzyme that catalyzes the chemical reaction L-phenylalanine + pyruvate ⇌ {\displaystyle...
    2 KB (141 words) - 15:21, 26 August 2023
  • Thumbnail for Tyrosine
    classified as a hydrophobic amino acid, it is more hydrophilic than phenylalanine. It is encoded by the codons UAC and UAU in messenger RNA. The one-letter...
    26 KB (2,535 words) - 03:03, 19 May 2024
  • In enzymology, a phenylalanine 2-monooxygenase (EC 1.13.12.9) is an enzyme that catalyzes the chemical reaction L-phenylalanine + O2 ⇌ {\displaystyle \rightleftharpoons...
    3 KB (279 words) - 15:20, 26 August 2023
  • enzymology, a phenylalanine N-acetyltransferase (EC 2.3.1.53) is an enzyme that catalyzes the chemical reaction acetyl-CoA + L-phenylalanine ⇌ {\displaystyle...
    2 KB (144 words) - 15:21, 26 August 2023
  • enzymology, a phenylalanine adenylyltransferase (EC 2.7.7.54) is an enzyme that catalyzes the chemical reaction ATP + L-phenylalanine ⇌ {\displaystyle...
    1 KB (120 words) - 15:20, 26 August 2023
  • Thumbnail for Catecholamine
    fight-or-flight response. Tyrosine is created from phenylalanine by hydroxylation by the enzyme phenylalanine hydroxylase. Tyrosine is also ingested directly...
    19 KB (2,050 words) - 14:21, 14 March 2024
  • Thumbnail for Lac-Phe
    exercise intervention. In mammals it is created from (S)-lactate and L-phenylalanine by the cytosol nonspecific dipeptidase (CNDP2) protein. It is classified...
    6 KB (432 words) - 22:06, 28 February 2024
  • Thumbnail for Phenylalanine (data page)
    200-568-1 (phenylalanine) ^a CID 994 from PubChem (phenylalanine) ^a CID 71567 from PubChem (D-phenylalanine) ^a CID 6140 from PubChem (L-phenylalanine)...
    3 KB (47 words) - 23:28, 12 January 2024
  • Thumbnail for L-DOPA
    disease or in the rare cases of patients with AADC enzyme deficiency. l-Phenylalanine, l-tyrosine, and l-DOPA are all precursors to the biological pigment...
    30 KB (2,973 words) - 10:09, 22 May 2024
  • Phenylalanine N-monooxygenase (EC 1.14.14.40, phenylalanine N-hydroxylase, CYP79A2) is an enzyme with systematic name L-phenylalanine,NADPH:oxygen oxidoreductase...
    3 KB (231 words) - 22:42, 6 February 2024
  • humans cannot synthesize are valine, isoleucine, leucine, methionine, phenylalanine, tryptophan, threonine, histidine, and lysine. Six other amino acids...
    27 KB (2,690 words) - 16:06, 13 May 2024
  • Thumbnail for Aromatic amino acid
    includes an aromatic ring. Among the 20 standard amino acids, histidine, phenylalanine, tryptophan, tyrosine, are classified as aromatic. Aromatic amino acids...
    11 KB (1,066 words) - 00:23, 4 May 2024
  • Thumbnail for Amino acid synthesis
    the concentrations of the repressor protein and corepressor level. Phenylalanine, tyrosine, and tryptophan, the aromatic amino acids, arise from chorismate...
    31 KB (3,929 words) - 22:03, 28 April 2024
  • Thumbnail for Arogenate dehydratase
    91) is an enzyme that catalyzes the chemical reaction L-arogenate → L phenylalanine + H2O + CO2 Certain forms of the protein have the potential to catalyze...
    9 KB (892 words) - 20:56, 26 August 2023
  • deaminate the amino acid phenylalanine into the products ammonia and phenylpyruvic acid. The test is performed by adding phenylalanine to the growth medium...
    38 KB (4,608 words) - 11:40, 30 April 2024
  • 4-dihydroxyphenylalanine oxidative deaminase (EC 1.13.12.15, 3,4-dihydroxy-L-phenylalanine: oxidative deaminase, oxidative deaminase, DOPA oxidative deaminase...
    1 KB (127 words) - 12:38, 26 August 2023
  • 4-dihydroxy-L-phenylalanine ⇌ {\displaystyle \rightleftharpoons } trans-caffeate + NH3 Hence, this enzyme has one substrate, 3,4-dihydroxy-L-phenylalanine (L-DOPA)...
    2 KB (153 words) - 13:51, 26 August 2023
  • Phenylalanine/tyrosine ammonia-lyase (EC 4.3.1.25, PTAL, bifunctional PAL) is an enzyme with systematic name L-phenylalanine(or L-tyrosine):trans-cinnamate(or...
    3 KB (285 words) - 12:08, 29 November 2023
  • Thumbnail for 4-Hydroxyphenylpyruvic acid
    metabolism of the amino acid phenylalanine. The aromatic side chain of phenylalanine is hydroxylated by the enzyme phenylalanine hydroxylase to form tyrosine...
    3 KB (166 words) - 12:09, 14 January 2024
  • Thumbnail for Hyperphenylalaninemia
    concentrations of the amino acid phenylalanine in the blood. Phenylketonuria (PKU) can result in severe hyperphenylalaninemia. Phenylalanine concentrations are routinely...
    8 KB (841 words) - 02:54, 14 May 2024
  • Thumbnail for Melphalan
    cytotoxicity in both dividing and non-dividing tumor cells. 4-Nitro-L-phenylalanine (1) was converted to its phthalimide by heating with phthalic anhydride...
    13 KB (943 words) - 22:46, 30 March 2024
  • DOPA-reductive deaminase, DOPARDA; systematic name 3,4-dihydroxy-L-phenylalanine ammonia-lyase (3,4-dihydroxyphenylpropanoate-forming)) catalyses the...
    1 KB (116 words) - 04:16, 28 November 2023
  • 30) is an enzyme that catalyzes the chemical reaction 3,4-dihydroxy-L-phenylalanine + O2 ⇌ {\displaystyle \rightleftharpoons } 5-(L-alanin-3-yl)-2-hydroxy-cis...
    2 KB (224 words) - 15:54, 26 August 2023