Accepted name: geranyl diphosphate diphosphatase
Reaction: geranyl diphosphate + H2O = geraniol + diphosphate
Other name(s): geraniol synthase; geranyl pyrophosphate pyrophosphatase; GES; CtGES
Systematic name: geranyl-diphosphate diphosphohydrolase
Comments: Isolated from Ocimum basilicum (basil) and Cinnamomum tenuipile (camphor tree). Requires Mg2+ or Mn2+. Geraniol is labelled when formed in the presence of [18O]H2O. Thus mechanism involves a geranyl cation [1]. Neryl diphosphate is hydrolysed more slowly. May be the same as EC monoterpenyl-diphosphatase.
1.  Iijima, Y., Gang, D.R., Fridman, E., Lewinsohn, E. and Pichersky, E. Characterization of geraniol synthase from the peltate glands of sweet basil. Plant Physiol. 134 (2004) 370–379. [PMID: 14657409]
2.  Yang, T., Li, J., Wang, H.X. and Zeng, Y. A geraniol-synthase gene from Cinnamomum tenuipilum. Phytochemistry 66 (2005) 285–293. [PMID: 15680985]
[EC created 2012]