_EC Lupan-3-beta,20-diol synthase. 0 PDB entries  
EC 4.-.-.- Lyases. [3,636 PDB entries]
EC 4.2.-.- Carbon-oxygen lyases. [1,771 PDB entries]
EC 4.2.1.- Hydro-lyases. [1,375 PDB entries]
EC Lupan-3-beta,20-diol synthase. [-]    

Reaction: Lupan-3-beta,20-diol = (3S)-2,3-epoxy-2,3-dihydrosqualene + H(2)O.
Comments: The reaction occurs in the reverse direction. The recombinant enzyme from Arabidopsis thaliana gives a 1:1 mixture of lupeol and lupan-3-beta,20-diol with small amounts of beta-amyrin, germanicol, taraxasterol and psi-taraxasterol. See Ec
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There are no PDB entries in enzyme class E.C.