Record Information
Version1.0
StatusDetected and Quantified
Creation Date2020-12-10 18:40:10 UTC
Update Date2024-04-30 19:32:56 UTC
Metabolite IDMMDBc0000543
Metabolite Identification
Common NamePhenyllactic acid
DescriptionPhenyllactic acid a product of phenylalanine catabolism, appearing prominently in the urine in individuals with phenylketonuria. Levels of several phenylalanine metabolites, including phenylacetate (PAA), phenyllactate (PLA), and phenylpyruvate (PPA)) are elevated in Phenylketonuria (PKU) (OMIM 261600 ). Phenyllactic acid is likely produced from phenylpyruvate via the action of lactate dehydrogenase. The D-form of this organic acid is typically derived from bacterial sources while the L-form is almost certainly endogenous. Levels of phenyllactate are normally very low in blood or urine. High levels of PLA in the urine or blood are often indicative of phenylketonuria (PKU) and hyperphenylalaninemia (HPA). PKU is due to lack of the enzyme phenylalanine hydroxylase (PAH), so that phenylalanine is converted not to tyrosine but to phenylpyruvic acid (a precursor of phenylactate). In particular, excessive phenylalanine is typically metabolized into phenylketones through, a transaminase pathway route involving glutamate. Metabolites of this transamination reaction include phenylacetate, phenylpyruvate and phenethylamine. In persons with PKU, dietary phenylalanine either accumulates in the body or some of it is converted to phenylpyruvic acid and then to phenyllactate through the action of lactate dehydrogenase. Individuals with PKU tend to excrete large quantities of phenylpyruvate, phenylacetate and phenyllactate, along with phenylalanine, in their urine. If untreated, mental retardation effects and microcephaly are evident by the first year along with other symptoms which include: unusual irritability, epileptic seizures and skin lesions. Hyperactivity, EEG abnormalities and seizures, and severe learning disabilities are major clinical problems later in life. A "musty or mousy" odor of skin, hair, sweat and urine (due to phenylacetate accumulation); and a tendency to hypopigmentation and eczema are also observed. The neural-development effects of PKU are primarily due to the disruption of neurotransmitter synthesis. In particular, phenylalanine is a large, neutral amino acid which moves across the blood-brain barrier (BBB) via the large neutral amino acid transporter (LNAAT). Excessive phenylalanine in the blood saturates the transporter. Thus, excessive levels of phenylalanine significantly decrease the levels of other LNAAs in the brain. But since these amino acids are required for protein and neurotransmitter synthesis, phenylalanine accumulation disrupts brain development, leading to mental retardation. (PMID: 10790306 ; OMIM: 261600 ). Phenyllactic acid can be found in Acinetobacter, Bacteroides, Bifidobacterium, Clostridium, Enterococcus, Escherichia, Eubacterium, Klebsiella, Lactobacillus, Pseudomonas and Staphylococcus (PMID: 19961416 ).
Structure
Synonyms
ValueSource
2-Hydroxy-2-phenylpropionic acidChEBI
2-Phenyllactic acidChEBI
alpha-Hydroxy-alpha-methylbenzeneacetic acidChEBI
alpha-Hydroxy-alpha-phenylpropionic acidChEBI
alpha-Methylmandelic acidChEBI
2-Hydroxy-2-phenylpropionateGenerator
2-PhenyllactateGenerator
a-Hydroxy-a-methylbenzeneacetateGenerator
a-Hydroxy-a-methylbenzeneacetic acidGenerator
alpha-Hydroxy-alpha-methylbenzeneacetateGenerator
Α-hydroxy-α-methylbenzeneacetateGenerator
Α-hydroxy-α-methylbenzeneacetic acidGenerator
a-Hydroxy-a-phenylpropionateGenerator
a-Hydroxy-a-phenylpropionic acidGenerator
alpha-Hydroxy-alpha-phenylpropionateGenerator
Α-hydroxy-α-phenylpropionateGenerator
Α-hydroxy-α-phenylpropionic acidGenerator
a-MethylmandelateGenerator
a-Methylmandelic acidGenerator
alpha-MethylmandelateGenerator
Α-methylmandelateGenerator
Α-methylmandelic acidGenerator
PhenyllactateGenerator
Atrolactic acid, (+-)-isomerMeSH
Hydroxyphenylpropionic acidMeSH
Atrolactic acidMeSH
Atrolactic acid monosodium salt, (S)-isomerMeSH
HMMAMeSH
Hydroxymethylmandelic acidMeSH
2-Hydroxy-3-phenylpropionic acidChEBI
beta-Phenyllactic acidChEBI
DL-3-Phenyllactic acidChEBI
DL-beta-Phenyllactic acidChEBI
2-Hydroxy-3-phenylpropionateGenerator
b-PhenyllactateGenerator
b-Phenyllactic acidGenerator
beta-PhenyllactateGenerator
β-phenyllactateGenerator
β-phenyllactic acidGenerator
DL-3-PhenyllactateGenerator
DL-b-PhenyllactateGenerator
DL-b-Phenyllactic acidGenerator
DL-beta-PhenyllactateGenerator
DL-β-phenyllactateGenerator
DL-β-phenyllactic acidGenerator
3-Phenyllactic acidMeSH, HMDB
3-Phenyllactic acid, monosodium saltMeSH, HMDB
3-PhenyllactateMeSH, Generator, HMDB
3-Phenyllactic acid, calcium saltMeSH, HMDB
3-Phenyllactic acid, (D)-isomerMeSH, HMDB
3-Phenyllactic acid, (DL)-isomerMeSH, HMDB
3-Phenyllactic acid, (L)-isomerMeSH, HMDB
2-Hydroxy-3-(phenyl)propanoic acidHMDB
3-(Phenyl)-2-hydroxypropanoic acidHMDB
Molecular FormulaC9H10O3
Average Mass166.1739
Monoisotopic Mass166.062994186
IUPAC Name2-hydroxy-3-phenylpropanoic acid
Traditional Nameβ-phenyllactic acid
CAS Registry NumberNot Available
SMILES
OC(CC1=CC=CC=C1)C(O)=O
InChI Identifier
InChI=1S/C9H10O3/c10-8(9(11)12)6-7-4-2-1-3-5-7/h1-5,8,10H,6H2,(H,11,12)
InChI KeyVOXXWSYKYCBWHO-UHFFFAOYSA-N