| |  Online-Ressource |
|---|
| Verfasst von: | Bezerra, Gustavo A. [VerfasserIn]  |
|---|
| | Foster, William R. [VerfasserIn] |
|---|
| | Bailey, Henry J. [VerfasserIn] |
|---|
| | Hicks, Kevin G. [VerfasserIn] |
|---|
| | Sauer, Sven [VerfasserIn] |
|---|
| | Dimitrov, Bianca [VerfasserIn] |
|---|
| | McCorvie, Thomas J. [VerfasserIn] |
|---|
| | Okun, Jürgen G. [VerfasserIn] |
|---|
| | Rutter, Jared [VerfasserIn] |
|---|
| | Kölker, Stefan [VerfasserIn] |
|---|
| | Yue, Wyatt W. [VerfasserIn] |
|---|
| Titel: | Crystal structure and interaction studies of human DHTKD1 provide insight into a mitochondrial megacomplex in lysine catabolism |
|---|
| Verf.angabe: | Gustavo A. Bezerra, William R. Foster, Henry J. Bailey, Kevin G. Hicks, Sven W. Sauer, Bianca Dimitrov, Thomas J. McCorvie, Jürgen G. Okun, Jared Rutter, Stefan Kölker and Wyatt W. Yue |
|---|
| E-Jahr: | 2020 |
|---|
| Jahr: | 10 June 2020 |
|---|
| Umfang: | 14 S. |
|---|
| Fussnoten: | Gesehen am 11.08.2020 |
|---|
| Titel Quelle: | Enthalten in: IUCrJ |
|---|
| Ort Quelle: | Chester, 2014 |
|---|
| Jahr Quelle: | 2020 |
|---|
| Band/Heft Quelle: | 7(2020), Seite 693-706 |
|---|
| ISSN Quelle: | 2052-2525 |
|---|
| Abstract: | DHTKD1 is a lesser-studied E1 enzyme among the family of 2-oxoacid dehydrogenases. In complex with E2 (dihydrolipoamide succinyltransferase, DLST) and E3 (dihydrolipoamide dehydrogenase, DLD) components, DHTKD1 is involved in lysine and tryptophan catabolism by catalysing the oxidative decarboxylation of 2-oxoadipate (2OA) in mitochondria. Here, the 1.9 angstrom resolution crystal structure of human DHTKD1 is solved in complex with the thiamine diphosphate co-factor. The structure reveals how the DHTKD1 active site is modelled upon the well characterized homologue 2-oxoglutarate (2OG) dehydrogenase but engineered specifically to accommodate its preference for the longer substrate of 2OA over 2OG. A 4.7 angstrom resolution reconstruction of the human DLST catalytic core is also generated by single-particle electron microscopy, revealing a 24-mer cubic scaffold for assembling DHTKD1 and DLD protomers into a megacomplex. It is further demonstrated that missense DHTKD1 variants causing the inborn error of 2-aminoadipic and 2-oxoadipic aciduria impact on the complex formation, either directly by disrupting the interaction with DLST, or indirectly through destabilizing the DHTKD1 protein. This study provides the starting framework for developing DHTKD1 modulators to probe the intricate mitochondrial energy metabolism. |
|---|
| DOI: | doi:10.1107/S205225252000696X |
|---|
| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext: https://doi.org/10.1107/S205225252000696X |
|---|
| | DOI: https://doi.org/10.1107/S205225252000696X |
|---|
| Datenträger: | Online-Ressource |
|---|
| Sprache: | eng |
|---|
| Sach-SW: | 2-oxoacid dehydrogenase |
|---|
| | 2-oxoadipate |
|---|
| | 2-oxoglutarate dehydrogenase |
|---|
| | acid |
|---|
| | alpha-ketoacid dehydrogenase |
|---|
| | complex |
|---|
| | cryo-EM |
|---|
| | cubic-core |
|---|
| | enzyme mechanisms |
|---|
| | generation |
|---|
| | human DHTKD1 |
|---|
| | ketoglutarate dehydrogenase |
|---|
| | lysine catabolism |
|---|
| | multi-protein complexes |
|---|
| | subunit |
|---|
| | superoxide/hydrogen peroxide |
|---|
| | thiamine diphosphate |
|---|
| K10plus-PPN: | 1726772144 |
|---|
| Verknüpfungen: | → Zeitschrift |
|---|
Crystal structure and interaction studies of human DHTKD1 provide insight into a mitochondrial megacomplex in lysine catabolism / Bezerra, Gustavo A. [VerfasserIn]; 10 June 2020 (Online-Ressource)
