دورية أكاديمية
Molecular architecture and electron transfer pathway of the Stn family transhydrogenase.
| العنوان: | Molecular architecture and electron transfer pathway of the Stn family transhydrogenase. |
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| المؤلفون: | Kumar A; SYNMIKRO Research Center and Department of Chemistry, Philipps-University of Marburg, Marburg, Germany.; Department of Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe University, Frankfurt am Main, Germany., Kremp F; Department of Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe University, Frankfurt am Main, Germany., Roth J; Department of Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe University, Frankfurt am Main, Germany., Freibert SA; SYNMIKRO Research Center and Department of Chemistry, Philipps-University of Marburg, Marburg, Germany.; Institut für Zytobiologie im Zentrum SYNMIKRO, Philipps-University of Marburg, Marburg, Germany.; Core Facility 'Protein Biochemistry and Spectroscopy', Marburg, 35032, Germany., Müller V; Department of Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe University, Frankfurt am Main, Germany. vmueller@bio.uni-frankfurt.de., Schuller JM; SYNMIKRO Research Center and Department of Chemistry, Philipps-University of Marburg, Marburg, Germany. jan.schuller@synmikro.uni-marburg.de. |
| المصدر: | Nature communications [Nat Commun] 2023 Sep 07; Vol. 14 (1), pp. 5484. Date of Electronic Publication: 2023 Sep 07. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: Nature Pub. Group Country of Publication: England NLM ID: 101528555 Publication Model: Electronic Cited Medium: Internet ISSN: 2041-1723 (Electronic) Linking ISSN: 20411723 NLM ISO Abbreviation: Nat Commun Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: [London] : Nature Pub. Group |
| مواضيع طبية MeSH: | Electrons* , Ferredoxins*, Anaerobiosis ; Thermodynamics ; Upper Extremity |
| مستخلص: | The challenge of endergonic reduction of NADP + using NADH is overcome by ferredoxin-dependent transhydrogenases that employ electron bifurcation for electron carrier adjustments in the ancient Wood-Ljungdahl pathway. Recently, an electron-bifurcating transhydrogenase with subunit compositions distinct from the well-characterized Nfn-type transhydrogenase was described: the Stn complex. Here, we present the single-particle cryo-EM structure of the Stn family transhydrogenase from the acetogenic bacterium Sporomusa ovata and functionally dissect its electron transfer pathway. Stn forms a tetramer consisting of functional heterotrimeric StnABC complexes. Our findings demonstrate that the StnAB subunits assume the structural and functional role of a bifurcating module, homologous to the HydBC core of the electron-bifurcating HydABC complex. Moreover, StnC contains a NuoG-like domain and a GltD-like NADPH binding domain that resembles the NfnB subunit of the NfnAB complex. However, in contrast to NfnB, StnC lost the ability to bifurcate electrons. Structural comparison allows us to describe how the same fold on one hand evolved bifurcation activity on its own while on the other hand combined with an associated bifurcating module, exemplifying modular evolution in anaerobic metabolism to produce activities critical for survival at the thermodynamic limit of life. (© 2023. Springer Nature Limited.) |
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| المشرفين على المادة: | 0 (Ferredoxins) |
| تواريخ الأحداث: | Date Created: 20230906 Date Completed: 20230908 Latest Revision: 20231119 |
| رمز التحديث: | 20231215 |
| مُعرف محوري في PubMed: | PMC10482914 |
| DOI: | 10.1038/s41467-023-41212-x |
| PMID: | 37673911 |
| قاعدة البيانات: | MEDLINE |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 2041-1723 |
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| DOI: | 10.1038/s41467-023-41212-x |