Structural basis for divergent C–H hydroxylation selectivity in two Rieske oxygenases

Rieske oxygenases are iron-dependent enzymes that catalyse C–H mono- and dihydroxylation reactions. Here, the authors characterise two cyanobacterial Rieske oxygenases, SxtT and GxtA that are involved in the biosynthesis of paralytic shellfish toxins and determine their substrate free and saxitoxin...

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Main Authors: April L. Lukowski, Jianxin Liu, Jennifer Bridwell-Rabb, Alison R. H. Narayan
Format: Article
Language:English
Published: Nature Portfolio 2020-06-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/s41467-020-16729-0
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author April L. Lukowski
Jianxin Liu
Jennifer Bridwell-Rabb
Alison R. H. Narayan
author_facet April L. Lukowski
Jianxin Liu
Jennifer Bridwell-Rabb
Alison R. H. Narayan
author_sort April L. Lukowski
collection DOAJ
description Rieske oxygenases are iron-dependent enzymes that catalyse C–H mono- and dihydroxylation reactions. Here, the authors characterise two cyanobacterial Rieske oxygenases, SxtT and GxtA that are involved in the biosynthesis of paralytic shellfish toxins and determine their substrate free and saxitoxin analog-bound crystal structures and by using mutagenesis experiments identify residues, which are important for substrate positioning and reaction selectivity.
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spelling doaj.art-b69e299e06b4475ab6229373dc78b5462022-12-21T21:27:16ZengNature PortfolioNature Communications2041-17232020-06-0111111010.1038/s41467-020-16729-0Structural basis for divergent C–H hydroxylation selectivity in two Rieske oxygenasesApril L. Lukowski0Jianxin Liu1Jennifer Bridwell-Rabb2Alison R. H. Narayan3Program in Chemical Biology, University of MichiganDepartment of Chemistry, University of MichiganProgram in Chemical Biology, University of MichiganProgram in Chemical Biology, University of MichiganRieske oxygenases are iron-dependent enzymes that catalyse C–H mono- and dihydroxylation reactions. Here, the authors characterise two cyanobacterial Rieske oxygenases, SxtT and GxtA that are involved in the biosynthesis of paralytic shellfish toxins and determine their substrate free and saxitoxin analog-bound crystal structures and by using mutagenesis experiments identify residues, which are important for substrate positioning and reaction selectivity.https://doi.org/10.1038/s41467-020-16729-0
spellingShingle April L. Lukowski
Jianxin Liu
Jennifer Bridwell-Rabb
Alison R. H. Narayan
Structural basis for divergent C–H hydroxylation selectivity in two Rieske oxygenases
Nature Communications
title Structural basis for divergent C–H hydroxylation selectivity in two Rieske oxygenases
title_full Structural basis for divergent C–H hydroxylation selectivity in two Rieske oxygenases
title_fullStr Structural basis for divergent C–H hydroxylation selectivity in two Rieske oxygenases
title_full_unstemmed Structural basis for divergent C–H hydroxylation selectivity in two Rieske oxygenases
title_short Structural basis for divergent C–H hydroxylation selectivity in two Rieske oxygenases
title_sort structural basis for divergent c h hydroxylation selectivity in two rieske oxygenases
url https://doi.org/10.1038/s41467-020-16729-0
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AT jianxinliu structuralbasisfordivergentchhydroxylationselectivityintworieskeoxygenases
AT jenniferbridwellrabb structuralbasisfordivergentchhydroxylationselectivityintworieskeoxygenases
AT alisonrhnarayan structuralbasisfordivergentchhydroxylationselectivityintworieskeoxygenases