FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
CV Term Report
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General Information
Term CAAX-protein geranylgeranyltransferase activity ID (Ontology) GO:0004662 (Gene Ontology)
Definition Catalysis of the reaction: geranylgeranyl diphosphate + protein-cysteine = S-geranylgeranyl-protein + diphosphate. This reaction is the formation of a thioether linkage between the C-1 atom of the geranylgeranyl group and a cysteine residue fourth from the C-terminus of the protein. The protein substrates have the C-terminal sequence CA1A2X, where the terminal residue, X, is preferably leucine and A2 should not be aromatic. Known substrates include most g-subunits of heterotrimeric G proteins and Ras-related GTPases such as members of the Ras and Rac/Rho families.[ EC:2 PubMed:8621375 ]
Also Known As "geranylgeranyl-diphosphate:protein-cysteine geranyltransferase activity" ; "geranylgeranyltransferase type I activity" ; "GGTase-I activity" (for all, see Synonyms field below)
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Annotations
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Data Class Field Records
Genes (FBgn)  GO_MOLECULAR_FUNCTION       2
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 Full annotation statements 
Relevant FlyBase reports
 Genes
 CAAX-protein geranylgeranyltransferase activity (all annotations which use CV term, excluding "NOT" statements)       2
     contributes_to | CAAX-protein geranylgeranyltransferase activity       2
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  protein prenyltransferase activity
   |__protein geranylgeranyltransferase activity
       |__CAAX-protein geranylgeranyltransferase activity  2 rec.
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Is a protein geranylgeranyltransferase activity
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Synonyms
  • "geranylgeranyl-diphosphate:protein-cysteine geranyltransferase activity" EXACT
    "geranylgeranyltransferase type I activity" EXACT
    "GGTase-I activity" EXACT
    "GGTaseI activity" EXACT
    "protein geranylgeranyltransferase type I" RELATED[ EC:2 ]
    "type I protein geranyl-geranyltransferase activity" RELATED[ EC:2 ]
Secondary IDs
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EC:2.5.1.59
MetaCyc:RXN-3701