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Oxidative stress protein Oxr1 promotes V-ATPase holoenzyme disassembly in catalytic activity-independent manner
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Khan, Md. Murad | - |
dc.contributor.author | Lee, Seowon | - |
dc.contributor.author | Couoh-Cardel, Sergio | - |
dc.contributor.author | Oot, Rebecca A | - |
dc.contributor.author | Kim, Hyunmin | - |
dc.contributor.author | Wilkens, Stephan | - |
dc.contributor.author | Roh, Soung-Hun | - |
dc.date.accessioned | 2024-05-16T01:50:27Z | - |
dc.date.available | 2024-05-16T01:50:27Z | - |
dc.date.created | 2022-02-08 | - |
dc.date.created | 2022-02-08 | - |
dc.date.issued | 2022-02 | - |
dc.identifier.citation | EMBO Journal, Vol.41 No.3, p. e109360 | - |
dc.identifier.issn | 0261-4189 | - |
dc.identifier.uri | https://hdl.handle.net/10371/202905 | - |
dc.description.abstract | The vacuolar ATPase (V-ATPase) is a rotary motor proton pump that is regulated by an assembly equilibrium between active holoenzyme and autoinhibited V-1-ATPase and V-o proton channel subcomplexes. Here, we report cryo-EM structures of yeast V-ATPase assembled in vitro from lipid nanodisc reconstituted V-o and mutant V-1. Our analysis identified holoenzymes in three active rotary states, indicating that binding of V-1 to V-o provides sufficient free energy to overcome V-o autoinhibition. Moreover, the structures suggest that the unequal spacing of V-o's proton-carrying glutamic acid residues serves to alleviate the symmetry mismatch between V-1 and V-o motors, a notion that is supported by mutagenesis experiments. We also uncover a structure of free V-1 bound to Oxr1, a conserved but poorly characterized factor involved in the oxidative stress response. Biochemical experiments show that Oxr1 inhibits V-1-ATPase and causes disassembly of the holoenzyme, suggesting that Oxr1 plays a direct role in V-ATPase regulation. | - |
dc.language | 영어 | - |
dc.publisher | Nature Publishing Group | - |
dc.title | Oxidative stress protein Oxr1 promotes V-ATPase holoenzyme disassembly in catalytic activity-independent manner | - |
dc.type | Article | - |
dc.identifier.doi | 10.15252/embj.2021109360 | - |
dc.citation.journaltitle | EMBO Journal | - |
dc.identifier.wosid | 000730969800001 | - |
dc.identifier.scopusid | 2-s2.0-85121361958 | - |
dc.citation.number | 3 | - |
dc.citation.startpage | e109360 | - |
dc.citation.volume | 41 | - |
dc.description.isOpenAccess | Y | - |
dc.contributor.affiliatedAuthor | Roh, Soung-Hun | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | VACUOLAR-H+-ATPASE | - |
dc.subject.keywordPlus | RENAL TUBULAR-ACIDOSIS | - |
dc.subject.keywordPlus | YEAST VACUOLAR | - |
dc.subject.keywordPlus | CRYSTAL-STRUCTURE | - |
dc.subject.keywordPlus | PROTON PUMP | - |
dc.subject.keywordPlus | AFFINITY PURIFICATION | - |
dc.subject.keywordPlus | STRUCTURAL FEATURES | - |
dc.subject.keywordPlus | SUBUNIT-C | - |
dc.subject.keywordPlus | GLUCOSE | - |
dc.subject.keywordPlus | DOMAIN | - |
dc.subject.keywordAuthor | Cryo-electron microscopy | - |
dc.subject.keywordAuthor | Oxr1p | - |
dc.subject.keywordAuthor | reversible disassembly | - |
dc.subject.keywordAuthor | TLDc domain | - |
dc.subject.keywordAuthor | vacuolar ATPase | - |
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