KEGG   ENZYME: 4.2.3.101Help
Entry
EC 4.2.3.101                Enzyme                                 

Name
7-epi-sesquithujene synthase;
TPS4-B73
Class
Lyases;
Carbon-oxygen lyases;
Acting on phosphates
BRITE hierarchy
Sysname
(2E,6E)-farnesyl-diphosphate diphosphate-lyase (7-epi-sesquithujene-forming)
Reaction(IUBMB)
(2E,6E)-farnesyl diphosphate = 7-epi-sesquithujene + diphosphate [RN:R09901]
Reaction(KEGG)
Substrate
(2E,6E)-farnesyl diphosphate [CPD:C00448]
Product
7-epi-sesquithujene [CPD:C20177];
diphosphate [CPD:C00013]
Comment
The enzyme from Zea mays, variety B73, gives mainly 7-epi-sesquithujene with (S)-beta-bisabolene and traces of other sesquiterpenoids, cf. EC 4.2.3.55 (S)-beta-bisabolene synthase. It requires Mg2+ or Mn2+. The product ratio is dependent on which metal ion is present. 7-epi-Sesquithujene is an attractant for the emerald ash borer beetle.
History
EC 4.2.3.101 created 2012
Reference
1  [PMID:15075399]
  Authors
Kollner TG, Schnee C, Gershenzon J, Degenhardt J
  Title
The variability of sesquiterpenes emitted from two Zea mays cultivars is controlled by allelic variation of two terpene synthase genes encoding stereoselective multiple product enzymes.
  Journal
Plant. Cell. 16 (2004) 1115-31.
  Sequence
[zma:542754]
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 

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