geneontology / go-ontology

Source ontology files for the Gene Ontology
http://geneontology.org/page/download-ontology
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gibberellin 2-beta-dioxygenase activity merges #28852

Closed sjm41 closed 2 weeks ago

sjm41 commented 2 weeks ago

Looks like the 6 terms below should be merged into GO:0045543: id: GO:0045543 name: gibberellin 2-beta-dioxygenase activity namespace: molecular_function def: "Catalysis of the reaction: a gibberellin + 2-oxoglutarate + O2 = a 2-beta-hydroxygibberellin + succinate + CO2." [GOC:kad, RHEA:15005] synonym: "gibberellin 2-beta-hydroxylase activity" RELATED [EC:1.14.11.13] synonym: "gibberellin 2-oxidase activity" EXACT [] synonym: "gibberellin 2beta-dioxygenase activity" RELATED [EC:1.14.11.13] synonym: "gibberellin 2beta-hydroxylase activity" RELATED [EC:1.14.11.13] xref: EC:1.14.11.13 xref: RHEA:15005 is_a: GO:0016706 ! 2-oxoglutarate-dependent dioxygenase activity property_value: term_tracker_item "https://github.com/geneontology/go-ontology/issues/22382" xsd:anyURI


pgaudet commented 2 weeks ago

There are more terms:

According to wikipedia, there are 136 GAs: https://en.wikipedia.org/wiki/Gibberellin

I suppose we may want to keep some major ones (if there are), but other terms that were not in the original list don't have annotations (see https://github.com/geneontology/go-annotation/issues/5445), so for now I will obsolete them.

pgaudet commented 2 weeks ago

GO:0045544 gibberellin 20-oxidase activity

Fixed definition from: "Catalysis of the oxidation of C-20 gibberellins to form the corresponding C-19 lactones." [PMID:7604047]

to : "Catalysis of the reaction: 2 2-oxoglutarate + gibberellin A12 (GA12) + H+ + 3 O2 = 3 CO2 + gibberellin A9 (GA9) + 2 H2O + 2 succinate. This reaction results in the oxidation of C-20 gibberellins to form the corresponding C-19 lactones, via a three-step oxidation at C-20 of the GA skeleton. Also converts GA53 to GA20. GA25 is also formed as a minor product." [PMID:32652020, PMID:7604047]

Added RHEA xrefs +xref: RHEA:60768 {source="skos:narrowMatch"} +xref: RHEA:60772 {source="skos:narrowMatch"} +xref: RHEA:60780 {source="skos:narrowMatch"} +xref: RHEA:60796 {comment="skos:narrowMatch"}

pgaudet commented 2 weeks ago
pgaudet commented 2 weeks ago

Obsolete GO:0047927 -name: gibberellin-44 dioxygenase activity -namespace: molecular_function -def: "Catalysis of the reaction: gibberellin 44 + 2-oxoglutarate + O2 = gibberellin 19 + succinate + CO2." [EC:1.14.11.12, MetaCyc:GIBBERELLIN-44-DIOXYGENASE-RXN] -synonym: "(gibberellin-44), 2-oxoglutarate:oxygen oxidoreductase activity" RELATED [EC:1.14.11.12] -synonym: "(gibberellin-44),2-oxoglutarate:oxygen oxidoreductase activity" RELATED [EC:1.14.11.12] -synonym: "gibberellin A44 oxidase activity" RELATED [EC:1.14.11.12] -synonym: "oxygenase, gibberellin A44 oxidase activity" RELATED [EC:1.14.11.12] -xref: EC:1.14.11.12 -xref: MetaCyc:RXN1F-168 -xref: RHEA:16033

because it is an intermediate in gibberellin 20-oxidase activity GO:0045544, see PMID:32652020. No annotations, so associations in EC or in RHEA.

pgaudet commented 2 weeks ago

Another family:

MetaCyc states:

Although the exact biochemical reactions carried out by this enzyme have not been identified to date, based on comparisons with other cytochrome P450 enzymes, it is likely that NAD(P)H and O2 are involved in this reaction.

Based on the lack of understanding of the reaction and the ack of annotations, I will obsolete these as well.