Component
Human cytosolic FARSA/FARSB phenylalanyl-tRNA synthetase
Context-specific entity; species, compartment and exposure are stated on each claim.
2 recorded relationships. Experimental role, claim status and evidence remain attached to each record.
How nutrients influence it
Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.
Other things that act on it
Enzymes, hormones, genes, and other components with a recorded effect. These are not nutrients, so they do not count toward the arrows above. Each finding names the chapter that recorded it.
How nutrients reach it in more than one step
Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.
Tracing routes…
What it does
Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.
What it acts on
Human cytosolic and mitochondrial phenylalanyl-tRNA synthetases could mischarge L-DOPA in biochemical assays; cytosolic editing hydrolyzed L-DOPA- and tyrosine-mischarged tRNA, whereas the mitochondrial system discriminated less effectively.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- In-vitro human cytosolic and mitochondrial synthetase assays.
- limitations
- Assay mischarging does not establish clinical proteotoxicity from a usual phenylalanine intake.
- nutrient_topic
- L-Phenylalanine collection; species, compartment, exposure, co-substrates and manipulation remain explicit. · L-Phenylalanine
- plain_language
- Similar-looking molecules can challenge protein-building accuracy.
- primary_references
- Bacterial and eukaryotic phenylalanyl-tRNA synthetases catalyze misaminoacylation of tRNA(Phe) with 3,4-dihydroxy-L-phenylalanine. · 2011 · https://pubmed.ncbi.nlm.nih.gov/22035791/ · DOI 10.1016/j.chembiol.2011.08.008
L-Phenylalanine: transport, protein synthesis, cofactor recycling and cross-nutrient mechanisms (2026-09-19) · lines 134–140
AI-assisted research curation; primary references, access levels and experimental limitations individually identified. Not publisher full text. · supports · In-vitro human cytosolic and mitochondrial synthetase assays. · source_derived_draft · unverified_draft
## l-phenylalanine-charging-fidelity Similar-looking molecules can challenge protein-building accuracy. Human cytosolic and mitochondrial phenylalanyl-tRNA synthetases could mischarge L-DOPA in biochemical assays; cytosolic editing hydrolyzed L-DOPA- and tyrosine-mischarged tRNA, whereas the mitochondrial system discriminated less effectively. Model: In-vitro human cytosolic and mitochondrial synthetase assays. Limitations: Assay mischarging does not establish clinical proteotoxicity from a usual phenylalanine intake. Evidence access: Primary abstract Bacterial and eukaryotic phenylalanyl-tRNA synthetases catalyze misaminoacylation of tRNA(Phe) with 3,4-dihydroxy-L-phenylalanine. · 2011 · https://pubmed.ncbi.nlm.nih.gov/22035791/ · DOI 10.1016/j.chembiol.2011.08.008
Complete structured claim and evidenceHuman cytosolic phenylalanyl-tRNA synthetase activates phenylalanine and attaches it to tRNA(Phe), with editing that discriminates against mischarged aromatic amino acids.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Human phenylalanyl-tRNA synthetase biochemical comparison.
- limitations
- This aminoacylation function is distinct from conversion of phenylalanine to tyrosine.
- nutrient_topic
- L-Phenylalanine collection; species, compartment, exposure, co-substrates and manipulation remain explicit. · L-Phenylalanine
- plain_language
- Protein construction needs a molecular loading and proofreading system.
- primary_references
- Bacterial and eukaryotic phenylalanyl-tRNA synthetases catalyze misaminoacylation of tRNA(Phe) with 3,4-dihydroxy-L-phenylalanine. · 2011 · https://pubmed.ncbi.nlm.nih.gov/22035791/ · DOI 10.1016/j.chembiol.2011.08.008
L-Phenylalanine: transport, protein synthesis, cofactor recycling and cross-nutrient mechanisms (2026-09-19) · lines 126–132
AI-assisted research curation; primary references, access levels and experimental limitations individually identified. Not publisher full text. · supports · Human phenylalanyl-tRNA synthetase biochemical comparison. · source_derived_draft · unverified_draft
## l-phenylalanine-cytosolic-charging Protein construction needs a molecular loading and proofreading system. Human cytosolic phenylalanyl-tRNA synthetase activates phenylalanine and attaches it to tRNA(Phe), with editing that discriminates against mischarged aromatic amino acids. Model: Human phenylalanyl-tRNA synthetase biochemical comparison. Limitations: This aminoacylation function is distinct from conversion of phenylalanine to tyrosine. Evidence access: Primary abstract Bacterial and eukaryotic phenylalanyl-tRNA synthetases catalyze misaminoacylation of tRNA(Phe) with 3,4-dihydroxy-L-phenylalanine. · 2011 · https://pubmed.ncbi.nlm.nih.gov/22035791/ · DOI 10.1016/j.chembiol.2011.08.008
Complete structured claim and evidence
The events it takes part in
A mechanism often involves more than two components. These are the full events, with every participant and its role.
Situations it appears in
Low-supply and faulty-machinery situations recorded in the chapters where this component plays a part.
In the sources
Preserved passages that mention this component, quoted exactly. Open one to read it in context.
Open hypotheses
Proposed ideas that involve this component. They are labeled as hypotheses and do not change any recorded statement.
This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.