Phenylalanine degradation III

Stable Identifier
R-OSA-1119267
Type
Pathway
Species
Oryza sativa
Compartment
Synonyms
Ehrlich pathway, pathway99543
Locations in the PathwayBrowser
Summation

Catabolic pathway for phenylalanine in plants remains largely elusive since no phenylalanine hydroxylase homolog has been found in higher plants. However, the evidence from feeding experiments with different species of higher plants indicates that phenylalanine is not degraded to any great extent (Mazelis, 1980). It is important to mention that a unique folate-dependent phenylalanine hydroxylase localized in chloroplasts has been identified in non-flowering plants (Pribat et al., 2010). In yeast, first step is performed by either of two aromatic amino acid transaminases. Aromatic amino acid aminotransferase is the main catabolic enzyme, and accepts 2-oxo-3-phenylpropanoate, pyruvate or 4-hydroxyphenylpyruvate, but not 2-oxoglutarate, as the amino acceptor. Reaction utilizing 2-oxoglutarate as the amino acceptor has also been demonstrated, and is likely catalyzed by aromatic amino acid aminotransferase.

Data source: RiceCyc

Literature References
PubMed ID Title Journal Year
  Amino acids and derivatives   1980
20959559 Nonflowering plants possess a unique folate-dependent phenylalanine hydroxylase that is localized in chloroplasts Plant Cell 2010
26384576 Amino Acid Catabolism in Plants Mol Plant 2015
Participants
Participant Of
Event Information
Orthologous Events
Cross References
RiceCyc