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Diterpene Synthase-Catalyzed Biosynthesis of Distinct Clerodane Stereoisomers

Journal Article · · ChemBioChem: a European journal of chemical biology
 [1];  [2];  [3];  [3];  [2]
  1. Univ. of California, Davis, CA (United States). Dept. of Plant Biology; UC Davis
  2. Univ. of California, Davis, CA (United States). Dept. of Plant Biology
  3. Univ. of California, Davis, CA (United States). Dept. of Chemistry
The diterpene synthase clerodienyl diphosphate synthase 1 (PvCPS1) from the crop plant switchgrass (Panicum virgatum) stereoselectively converts (E,E,E)-geranylgeranyl diphosphate (GGPP) into the clerodane natural product, cis-trans-clerodienyl diphosphate (CLPP, 1). Structure-guided point mutations of PvCPS1 redirected product stereoselectivity toward the formation of a rare cis-clerodane diastereomer, cis-cis-CLPP (2). Additionally, an alternative cis-clerodane diastereomer, (5S,8S,9R,10R)-13Z-CLPP (3), was produced when treating PvCPS1 and select variants thereof with the cis-prenyl substrate (Z,Z,Z)-nerylneryl diphosphate (NNPP). These results support the hypothesis that substrate configuration and minor active-site alterations impact precatalysis substrate folding in the stereoselective biosynthesis of clerodane diterpenoid scaffolds, and can be employed to provide enzymatic access to a broader range of bioactive clerodane natural products.
Research Organization:
Univ. of California, Davis, CA (United States)
Sponsoring Organization:
DOE Joint Genome Institute Community Science Program; NSF Graduate Research Fellowship Program; USDOE; USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23). Biological Systems Science Division
Grant/Contract Number:
SC0019178
OSTI ID:
1633651
Alternate ID(s):
OSTI ID: 1613140
OSTI ID: 1483731
Journal Information:
ChemBioChem: a European journal of chemical biology, Journal Name: ChemBioChem: a European journal of chemical biology Journal Issue: 1 Vol. 20; ISSN 1439-4227
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English

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