Histidine 129 in the 75-kDa subunit of mitochondrial complex I from Yarrowia lipolytica is not a ligand for [Fe4S4] cluster N5 but is required for catalytic activity
- Respiratory chain complex I contains 8-9 iron-sulfur clusters. In several cases, the assignment of these clusters to subunits and binding motifs is still ambiguous. To test the proposed ligation of the tetranuclear iron-sulfur cluster N5 of respiratory chain complex I, we replaced the conserved histidine 129 in the 75-kDa subunit from Yarrowia lipolytica with alanine. In the mutant strain, reduced amounts of fully assembled but destabilized complex I could be detected. Deamino-NADH: ubiquinone oxidoreductase activity was abolished completely by the mutation. However, EPR spectroscopic analysis of mutant complex I exhibited an unchanged cluster N5 signal, excluding histidine 129 as a cluster N5 ligand.
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| Author: | Antje WaletkoGND, Klaus ZwickerORCiD, Albina AbdrakhmanovaGND, Volker ZickermannORCiDGND, Ulrich BrandtORCiDGND, Stefan Kerscher |
|---|---|
| URN: | urn:nbn:de:hebis:30:3-762009 |
| DOI: | https://doi.org/10.1074/jbc.M411488200 |
| ISSN: | 0021-9258 |
| Pubmed Id: | https://pubmed.ncbi.nlm.nih.gov/15572358 |
| Parent Title (English): | Journal of biological chemistry |
| Publisher: | American Society for Biochemistry and Molecular Biology Publications |
| Place of publication: | Bethesda, Md |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2021/01/04 |
| Year of first Publication: | 2004 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Release Date: | 2024/03/05 |
| Volume: | 280.2005 |
| Issue: | 7 |
| Page Number: | 4 |
| First Page: | 5622 |
| Last Page: | 5625 |
| Institutes: | Medizin |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie |
| 6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit | |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Creative Commons - CC BY - Namensnennung 4.0 International |
