Gene Ontology annotation through association of InterPro records with GO terms
Combined Automated Annotation using Multiple IEA Methods
Electronic Gene Ontology annotations created by ARBA machine learning models
Gene Ontology annotation based on UniPathway vocabulary mapping
Manual transfer of experimentally-verified manual GO annotation data to orthologs by curator judgment of sequence similarity
UniProtKB reviewed entry for PAL (PALY_POPTR, P45730)
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"L-phenylalanine = (E)-cinnamate + NH4(+)"
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"PATHWAY: Phenylpropanoid metabolism"
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"SUBCELLULAR LOCATION: Cytoplasm"
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"SIMILARITY: Belongs to the PAL/histidase family"
QuickGO GOA annotations for PAL
Falcon (Edison) deep-research synthesis for Populus trichocarpa PAL (P45730)
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"catalyzes the **non-oxidative deamination** of **L-phenylalanine** to yield **trans-cinnamic acid**, which constitutes the canonical **entry reaction** from aromatic amino-acid metabolism into **phenylpropanoid biosynthesis** in plants"
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"PAL is consistently described as controlling or strongly influencing **carbon flux** into phenylpropanoid-derived products, including **lignin**, **flavonoids**, **condensed tannins (proanthocyanidins)**, and **phenolic glycosides**"
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"**Populus trichocarpa contains five PAL genes (PtrPAL1–PtrPAL5)**"
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"a **lignin-associated, xylem/root-tip-enriched group** versus a more broadly expressed group more associated with **condensed tannins/flavonoids/other phenolics**"
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"The retrieved Populus-focused excerpts do not provide a definitive subcellular compartment assignment (e.g., cytosol vs ER/microsomes) for **Populus trichocarpa** PAL proteins"
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"Phenylalanine ammonia-lyase (EC 4.3.1.24) catalyzing deamination of **L-phenylalanine → trans-cinnamic acid**, the entry reaction into phenylpropanoid metabolism"