The Enzyme Database

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Accepted name: geranylgeranyl diphosphate diphosphatase
Reaction: geranylgeranyl diphosphate + H2O = geranylgeraniol + diphosphate
For diagram of acyclic diterpenoid biosynthesis, click here
Glossary: plaunotol = 18-hydroxygeranylgeraniol
Other name(s): geranylgeranyl diphosphate phosphatase
Systematic name: geranyl-diphosphate diphosphohydrolase
Comments: Involved in the biosynthesis of plaunotol. There are two isoenzymes with different ion requirements. Neither require Mg2+ but in addition PII is inhibited by Zn2+, Mn2+ and Co2+. It is not known which isoenzyme is involved in plaunotol biosynthesis.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Nualkaew, N., De-Eknamkul, W., Kutchan, T.M. and Zenk, M.H. Membrane-bound geranylgeranyl diphosphate phosphatases: purification and characterization from Croton stellatopilosus leaves. Phytochemistry 67 (2006) 1613–1620. [DOI] [PMID: 16445953]
[EC created 2009]

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