FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term threonine deaminase activity ID (Ontology) GO:0004794 (Gene Ontology)
Definition Catalysis of the reaction: L-threonine = 2-oxobutanoate + NH4.[ EC:4 ]
Also Known As"L-threonine ammonia-lyase (2-oxobutanoate-forming)" ; "L-threonine ammonia-lyase activity" ; "L-threonine deaminase activity" (for all, see Synonyms field below)
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Genes (FBgn)GO_MOLECULAR_FUNCTION
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 threonine deaminase activity (all annotations which use CV term, excluding "NOT" statements)
     enables | threonine deaminase activity
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  carbon-nitrogen lyase activity
   |__ammonia-lyase activity
       |__threonine deaminase activity  1 rec.
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Is a ammonia-lyase activity
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Synonyms
  • "L-serine dehydratase activity" RELATED[ EC:4 ]
    "L-threonine ammonia-lyase (2-oxobutanoate-forming)" EXACT[ EC:4 ]
    "L-threonine ammonia-lyase activity" EXACT
    "L-threonine deaminase activity" EXACT[ EC:4 ]
    "L-threonine dehydratase activity" EXACT[ EC:4 ]
    "L-threonine hydro-lyase (deaminating) activity" RELATED[ EC:4 ]
    "serine deaminase activity" RELATED[ EC:4 ]
    "threonine ammonia-lyase activity" BROAD
    "threonine dehydrase activity" EXACT[ EC:4 ]
    "threonine dehydratase activity" BROAD
Secondary IDs
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EC:4.3.1.19
MetaCyc:THREDEHYD-RXN
Reactome:R-HSA-9014627 "SDS dimers:PXLP convert L-Thr to 2OBUTA"
RHEA:22108
UM-BBD_reactionID:r0433