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.
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The expected taxonomic range for this enzyme is: Zea mays
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.
7-epi-sesquithujene is the main product, the enzyme also produces (S)-beta-bisabolene, (E)-beta-farnesene, and the minor products sesquithujene, (Z)-alpha-bergamotene, sesquisabinene B, (E)-alpha-bergamotene, and sesquisabinene A
main product is (S)-(-)-limonene, minor products are alpha-thujene, beta-myrcene, (+)-sabinene, (-)-sabinene, alpha-terpinene, (E)-beta-ocimene, beta-phellandrene, alpha-terpinolene, gamma-terpinene, sabinene hydrate, (R)-(-)-linalool, and (S)-(1)-linalool
the mutation restores much of the wild type activity (albeit maintaining the increased concentration of (E)-beta-farnesene relative to that of sesquithujene and (S)-beta-bisabolene)
Koellner, T.; Schnee, C.; Gershenzon, J.; Degenhardt, J.
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
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4.2.3.101 7-epi-sesquithujene synthase
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