GCH1 supplies a pteridine precursor; the triphosphate stays attached and formate is released. The primary reaction does not release pyrophosphate. Regulation must distinguish GCH1 from its GFRP partner (PMID:33229582(https://pubmed.ncbi.nlm.nih.gov/33229582/)). The current product descriptions separate natural sequences from engineered proteins (PMID:8068008(https://pubmed.ncbi.nlm.nih.gov/8068008/)).
Cofactor supply can regulate nitric oxide synthase activity without making GCH1 the enzyme that synthesizes nitric oxide or dopamine. Similarly, the superoxide study measures production through enzyme uncoupling, which differs from removal (PMID:12176133(https://pubmed.ncbi.nlm.nih.gov/12176133/), PMID:19666465(https://pubmed.ncbi.nlm.nih.gov/19666465/)). The human tetrahydrofolate mapping is not justified by a family whose shared catalytic step feeds different downstream pathways in bacteria and vertebrates (InterPro IPR001474, IPR018234).
The positive GTPase and unresolved vesicle/neuronal-terminal claims retain uncertainty where full supporting assays were not accessible. A verified PAX6 citation mismatch is recorded without guessing a replacement identifier; independent genuine GCH1 evidence supports the complex function. Original-reading scope gives the exact distinctions.
Current decisions were assessed individually. The archive preserves the earlier review and GOA through immutable Git locators, including all historical quote associations and source-retired contexts. The inherited ferroptosis tag and provider report are retained historical metadata, not new experimental claims.
See the LPS endpoint comparison. Unavailable experimental assays remain uncertain.
The catalytic assembly is now specified as GO:0034615 GCH1 complex, while the PAX6 citation defect remains. Separately, PMID:17704208 supplies regulatory context with its laminar-shear and CK2 alpha-prime limits preserved. The unsupported active ferroptosis tag is removed; the unchanged historical review still records it, without implying that the underlying biological relationship is disproved.