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 16:1115-31 (2004)
DOI:10.1105/tpc.019877
  Sequence
[zma:542754]
Other DBs
ExplorEnz - The Enzyme Database: 4.2.3.101
IUBMB Enzyme Nomenclature: 4.2.3.101
ExPASy - ENZYME nomenclature database: 4.2.3.101
BRENDA, the Enzyme Database: 4.2.3.101

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