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Gene ontology
Version 2014-12-22
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Details for CAAX-protein geranylgeranyltransferase activity
2.5.1.59
Gene ontology ID
GO:0004662
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
Synonyms
1. geranylgeranyl-diphosphate:protein-cysteine geranyltransferase activity
2. geranylgeranyltransferase type I activity
3. GGTase-I activity
4. GGTaseI activity
5. protein geranylgeranyltransferase type I
6. type I protein geranyl-geranyltransferase activity
References
1. EC 2.5.1.59
2. PMID 8621375
3. MetaCyc 2.5.1.60-RXN
4. MetaCyc RXN-3701
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