The Enzyme Database

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Accepted name: δ-amyrin synthase
Reaction: (3S)-2,3-epoxy-2,3-dihydrosqualene = δ-amyrin
For diagram of α-amyrin, α-seco-amyrin and germanicol biosynthesis, click here
Other name(s): SlTTS2 (gene name)
Systematic name: (3S)-2,3-epoxy-2,3-dihydrosqualene mutase (cyclizing, δ-amyrin-forming)
Comments: The enzyme from tomato (Solanum lycopersicum) gives 48% δ-amyrin, 18% α-amyrin, 13% β-amyrin and traces of three or four other triterpenoid alcohols [1]. See also EC, α-amyrin synthase and EC, β-amyrin synthase.
Links to other databases: BRENDA, EXPASY, Gene, KEGG, MetaCyc
1.  Wang, Z., Guhling, O., Yao, R., Li, F., Yeats, T.H., Rose, J.K. and Jetter, R. Two oxidosqualene cyclases responsible for biosynthesis of tomato fruit cuticular triterpenoids. Plant Physiol. 155 (2011) 540–552. [DOI] [PMID: 21059824]
[EC created 2011]

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