Structural highlights
Publication Abstract from PubMed
Geometric isomerization can expand the scope of biological activities of natural products. The observed chemical diversity among the pseurotin-type fungal secondary metabolites is in part generated by a trans to cis isomerization of an olefin. In vitro characterizations of pseurotin biosynthetic enzymes revealed that the glutathione S-transferase PsoE requires participation of the bifunctional C-methyltransferase/epoxidase PsoF to complete the trans to cis isomerization of the pathway intermediate presynerazol. The crystal structure of the PsoE/glutathione/presynerazol complex indicated stereospecific glutathione-presynerazol conjugate formation is the principal function of PsoE. Moreover, PsoF was identified to have an additional, unexpected oxidative isomerase activity, thus making it a trifunctional enzyme which is key to the complexity generation in pseurotin biosynthesis. Through the study, we identified a novel mechanism of accomplishing a seemingly simple trans to cis isomerization reaction.
Oxidative trans to cis Isomerization of Olefins in Polyketide Biosynthesis.,Yamamoto T, Tsunematsu Y, Hara K, Suzuki T, Kishimoto S, Kawagishi H, Noguchi H, Hashimoto H, Tang Y, Hotta K, Watanabe K Angew Chem Int Ed Engl. 2016 May 17;55(21):6207-10. doi: 10.1002/anie.201600940. , Epub 2016 Apr 13. PMID:27072782[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Yamamoto T, Tsunematsu Y, Hara K, Suzuki T, Kishimoto S, Kawagishi H, Noguchi H, Hashimoto H, Tang Y, Hotta K, Watanabe K. Oxidative trans to cis Isomerization of Olefins in Polyketide Biosynthesis. Angew Chem Int Ed Engl. 2016 May 17;55(21):6207-10. doi: 10.1002/anie.201600940. , Epub 2016 Apr 13. PMID:27072782 doi:http://dx.doi.org/10.1002/anie.201600940
