Acetylene Hydratase

dc.contributor.authorSeiffert, Grazyna B
dc.contributor.authorAbt, Dietmar
dc.contributor.authortenBrink, Felix
dc.contributor.authorFischer, David
dc.contributor.authorEinsle, Oliver
dc.contributor.authorKroneck, Peter M. H.
dc.date.accessioned2017-06-01T09:29:50Z
dc.date.available2017-06-01T09:29:50Z
dc.date.issued2011eng
dc.description.abstractThe tungsten-iron-sulfur enzyme acetylene hydratase is a rather unique enzyme within the class of tungsten/molybdenum enzymes in the sense that it catalyzes a nonredox reaction, the addition of one molecule of water to the C[TRIPLE BOND]C bond of acetylene to form acetaldehyde. Its crystal structure (1.26 Å) reveals a close to octahedral, or trigonal antiprismatic tungsten center, which binds a water molecule that gets activated by an adjacent aspartate residue such that it can attack an acetylene molecule bound in a distinct, hydrophobic pocket. This requires a strong shift of pKa of the aspartate, caused by a nearby low-potential [4Fe–4S] cluster. To gain access to this novel W-Asp-active site, the protein evolved a new substrate channel distant from where it is found in other molybdenum and tungsten enzymes.eng
dc.description.versionpublishedeng
dc.identifier.doi10.1002/9781119951438.eibc0658eng
dc.identifier.urihttps://kops.uni-konstanz.de/handle/123456789/39101
dc.language.isoengeng
dc.subject.ddc570eng
dc.titleAcetylene Hydrataseeng
dc.typeINCOLLECTIONeng
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@incollection{Seiffert2011Acety-39101,
  year={2011},
  doi={10.1002/9781119951438.eibc0658},
  title={Acetylene Hydratase},
  isbn={978-1-119-95143-8},
  publisher={John Wiley & Sons, Ltd},
  address={Chichester, UK},
  booktitle={Encyclopedia of Inorganic and Bioinorganic Chemistry},
  editor={Scott, Robert A.},
  author={Seiffert, Grazyna B and Abt, Dietmar and tenBrink, Felix and Fischer, David and Einsle, Oliver and Kroneck, Peter M. H.}
}
kops.citation.iso690SEIFFERT, Grazyna B, Dietmar ABT, Felix TENBRINK, David FISCHER, Oliver EINSLE, Peter M. H. KRONECK, 2011. Acetylene Hydratase. In: SCOTT, Robert A., ed.. Encyclopedia of Inorganic and Bioinorganic Chemistry. Chichester, UK: John Wiley & Sons, Ltd, 2011. ISBN 978-1-119-95143-8. Available under: doi: 10.1002/9781119951438.eibc0658deu
kops.citation.iso690SEIFFERT, Grazyna B, Dietmar ABT, Felix TENBRINK, David FISCHER, Oliver EINSLE, Peter M. H. KRONECK, 2011. Acetylene Hydratase. In: SCOTT, Robert A., ed.. Encyclopedia of Inorganic and Bioinorganic Chemistry. Chichester, UK: John Wiley & Sons, Ltd, 2011. ISBN 978-1-119-95143-8. Available under: doi: 10.1002/9781119951438.eibc0658eng
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    <dcterms:abstract xml:lang="eng">The tungsten-iron-sulfur enzyme acetylene hydratase is a rather unique enzyme within the class of tungsten/molybdenum enzymes in the sense that it catalyzes a nonredox reaction, the addition of one molecule of water to the C[TRIPLE BOND]C bond of acetylene to form acetaldehyde. Its crystal structure (1.26 Å) reveals a close to octahedral, or trigonal antiprismatic tungsten center, which binds a water molecule that gets activated by an adjacent aspartate residue such that it can attack an acetylene molecule bound in a distinct, hydrophobic pocket. This requires a strong shift of pKa of the aspartate, caused by a nearby low-potential [4Fe–4S] cluster. To gain access to this novel W-Asp-active site, the protein evolved a new substrate channel distant from where it is found in other molybdenum and tungsten enzymes.</dcterms:abstract>
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kops.sourcefieldSCOTT, Robert A., ed.. <i>Encyclopedia of Inorganic and Bioinorganic Chemistry</i>. Chichester, UK: John Wiley & Sons, Ltd, 2011. ISBN 978-1-119-95143-8. Available under: doi: 10.1002/9781119951438.eibc0658deu
kops.sourcefield.plainSCOTT, Robert A., ed.. Encyclopedia of Inorganic and Bioinorganic Chemistry. Chichester, UK: John Wiley & Sons, Ltd, 2011. ISBN 978-1-119-95143-8. Available under: doi: 10.1002/9781119951438.eibc0658deu
kops.sourcefield.plainSCOTT, Robert A., ed.. Encyclopedia of Inorganic and Bioinorganic Chemistry. Chichester, UK: John Wiley & Sons, Ltd, 2011. ISBN 978-1-119-95143-8. Available under: doi: 10.1002/9781119951438.eibc0658eng
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source.contributor.editorScott, Robert A.
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source.publisherJohn Wiley & Sons, Ltdeng
source.publisher.locationChichester, UKeng
source.titleEncyclopedia of Inorganic and Bioinorganic Chemistryeng

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