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Poliacikova G, Barthez M, Rival T, Aouane A, Luis NM, Richard F, Daian F, Brouilly N, Schnorrer F, Maurel-Zaffran C, Graba Y, Saurin AJ. M1BP is an essential transcriptional activator of oxidative metabolism during Drosophila development. Nat Commun 2023; 14:3187. [PMID: 37268614 DOI: 10.1038/s41467-023-38986-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 05/23/2023] [Indexed: 06/04/2023] Open
Abstract
Oxidative metabolism is the predominant energy source for aerobic muscle contraction in adult animals. How the cellular and molecular components that support aerobic muscle physiology are put in place during development through their transcriptional regulation is not well understood. Using the Drosophila flight muscle model, we show that the formation of mitochondria cristae harbouring the respiratory chain is concomitant with a large-scale transcriptional upregulation of genes linked with oxidative phosphorylation (OXPHOS) during specific stages of flight muscle development. We further demonstrate using high-resolution imaging, transcriptomic and biochemical analyses that Motif-1-binding protein (M1BP) transcriptionally regulates the expression of genes encoding critical components for OXPHOS complex assembly and integrity. In the absence of M1BP function, the quantity of assembled mitochondrial respiratory complexes is reduced and OXPHOS proteins aggregate in the mitochondrial matrix, triggering a strong protein quality control response. This results in isolation of the aggregate from the rest of the matrix by multiple layers of the inner mitochondrial membrane, representing a previously undocumented mitochondrial stress response mechanism. Together, this study provides mechanistic insight into the transcriptional regulation of oxidative metabolism during Drosophila development and identifies M1BP as a critical player in this process.
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Affiliation(s)
- Gabriela Poliacikova
- Aix-Marseille Univ, CNRS, Developmental Biology Institute of Marseille (IBDM), UMR 7288, Case 907, Turing Center for Living Systems, Parc Scientifique de Luminy, 13288, Marseille Cedex 09, France
| | - Marine Barthez
- Aix-Marseille Univ, CNRS, Developmental Biology Institute of Marseille (IBDM), UMR 7288, Case 907, Turing Center for Living Systems, Parc Scientifique de Luminy, 13288, Marseille Cedex 09, France
| | - Thomas Rival
- Aix-Marseille Univ, CNRS, Developmental Biology Institute of Marseille (IBDM), UMR 7288, Case 907, Turing Center for Living Systems, Parc Scientifique de Luminy, 13288, Marseille Cedex 09, France
| | - Aïcha Aouane
- Aix-Marseille Univ, CNRS, Developmental Biology Institute of Marseille (IBDM), UMR 7288, Case 907, Turing Center for Living Systems, Parc Scientifique de Luminy, 13288, Marseille Cedex 09, France
| | - Nuno Miguel Luis
- Aix-Marseille Univ, CNRS, Developmental Biology Institute of Marseille (IBDM), UMR 7288, Case 907, Turing Center for Living Systems, Parc Scientifique de Luminy, 13288, Marseille Cedex 09, France
| | - Fabrice Richard
- Aix-Marseille Univ, CNRS, Developmental Biology Institute of Marseille (IBDM), UMR 7288, Case 907, Turing Center for Living Systems, Parc Scientifique de Luminy, 13288, Marseille Cedex 09, France
| | - Fabrice Daian
- Aix-Marseille Univ, CNRS, Developmental Biology Institute of Marseille (IBDM), UMR 7288, Case 907, Turing Center for Living Systems, Parc Scientifique de Luminy, 13288, Marseille Cedex 09, France
| | - Nicolas Brouilly
- Aix-Marseille Univ, CNRS, Developmental Biology Institute of Marseille (IBDM), UMR 7288, Case 907, Turing Center for Living Systems, Parc Scientifique de Luminy, 13288, Marseille Cedex 09, France
| | - Frank Schnorrer
- Aix-Marseille Univ, CNRS, Developmental Biology Institute of Marseille (IBDM), UMR 7288, Case 907, Turing Center for Living Systems, Parc Scientifique de Luminy, 13288, Marseille Cedex 09, France
| | - Corinne Maurel-Zaffran
- Aix-Marseille Univ, CNRS, Developmental Biology Institute of Marseille (IBDM), UMR 7288, Case 907, Turing Center for Living Systems, Parc Scientifique de Luminy, 13288, Marseille Cedex 09, France
| | - Yacine Graba
- Aix-Marseille Univ, CNRS, Developmental Biology Institute of Marseille (IBDM), UMR 7288, Case 907, Turing Center for Living Systems, Parc Scientifique de Luminy, 13288, Marseille Cedex 09, France
| | - Andrew J Saurin
- Aix-Marseille Univ, CNRS, Developmental Biology Institute of Marseille (IBDM), UMR 7288, Case 907, Turing Center for Living Systems, Parc Scientifique de Luminy, 13288, Marseille Cedex 09, France.
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Yang JH, Williams D, Kandiah E, Fromme P, Chiu PL. Structural basis of redox modulation on chloroplast ATP synthase. Commun Biol 2020; 3:482. [PMID: 32879423 PMCID: PMC7468127 DOI: 10.1038/s42003-020-01221-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Accepted: 08/06/2020] [Indexed: 12/26/2022] Open
Abstract
In higher plants, chloroplast ATP synthase has a unique redox switch on its γ subunit that modulates enzyme activity to limit ATP hydrolysis at night. To understand the molecular details of the redox modulation, we used single-particle cryo-EM to determine the structures of spinach chloroplast ATP synthase in both reduced and oxidized states. The disulfide linkage of the oxidized γ subunit introduces a torsional constraint to stabilize the two β hairpin structures. Once reduced, free cysteines alleviate this constraint, resulting in a concerted motion of the enzyme complex and a smooth transition between rotary states to facilitate the ATP synthesis. We added an uncompetitive inhibitor, tentoxin, in the reduced sample to limit the flexibility of the enzyme and obtained high-resolution details. Our cryo-EM structures provide mechanistic insight into the redox modulation of the energy regulation activity of chloroplast ATP synthase. Jay-How Yang et al. use single-particle cryo-EM to determine the structures of spinach chloroplast ATP synthase in reduced and oxidized states. They report a torsional constraint in the oxidized γ subunit that is alleviated by free cysteines in the reduced state. Their work provides mechanistic insights into the redox modulation of the ATP synthesis by the chloroplast ATP synthase.
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Affiliation(s)
- Jay-How Yang
- Center for Applied Structural Discovery (CASD), Biodesign Institute, Arizona State University, Tempe, AZ, USA
| | - Dewight Williams
- Eyring Materials Center, Arizona State University, Tempe, AZ, 85287, USA
| | | | - Petra Fromme
- Center for Applied Structural Discovery (CASD), Biodesign Institute, Arizona State University, Tempe, AZ, USA. .,School of Molecular Sciences, Arizona State University, Tempe, AZ, 85287, USA.
| | - Po-Lin Chiu
- Center for Applied Structural Discovery (CASD), Biodesign Institute, Arizona State University, Tempe, AZ, USA. .,School of Molecular Sciences, Arizona State University, Tempe, AZ, 85287, USA.
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Dewey ED, Stokes LM, Burchell BM, Shaffer KN, Huntington AM, Baker JM, Nadendla S, Giglio MG, Bender KS, Touchman JW, Blankenship RE, Madigan MT, Sattley WM. Analysis of the Complete Genome of the Alkaliphilic and Phototrophic Firmicute Heliorestis convoluta Strain HH T. Microorganisms 2020; 8:E313. [PMID: 32106460 PMCID: PMC7143216 DOI: 10.3390/microorganisms8030313] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 02/16/2020] [Accepted: 02/22/2020] [Indexed: 11/16/2022] Open
Abstract
Despite significant interest and past work to elucidate the phylogeny and photochemistry of species of the Heliobacteriaceae, genomic analyses of heliobacteria to date have been limited to just one published genome, that of the thermophilic species Heliobacterium (Hbt.) modesticaldum str. Ice1T. Here we present an analysis of the complete genome of a second heliobacterium, Heliorestis (Hrs.) convoluta str. HHT, an alkaliphilic, mesophilic, and morphologically distinct heliobacterium isolated from an Egyptian soda lake. The genome of Hrs. convoluta is a single circular chromosome of 3.22 Mb with a GC content of 43.1% and 3263 protein-encoding genes. In addition to culture-based observations and insights gleaned from the Hbt. modesticaldum genome, an analysis of enzyme-encoding genes from key metabolic pathways supports an obligately photoheterotrophic lifestyle for Hrs. convoluta. A complete set of genes encoding enzymes for propionate and butyrate catabolism and the absence of a gene encoding lactate dehydrogenase distinguishes the carbon metabolism of Hrs. convoluta from its close relatives. Comparative analyses of key proteins in Hrs. convoluta, including cytochrome c553 and the Fo alpha subunit of ATP synthase, with those of related species reveal variations in specific amino acid residues that likely contribute to the success of Hrs. convoluta in its highly alkaline environment.
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Affiliation(s)
- Emma D. Dewey
- Division of Natural Sciences, Indiana Wesleyan University, Marion, IN 46953, USA; (E.D.D.); (L.M.S.); (B.M.B.); (K.N.S.); (A.M.H.); (J.M.B.)
| | - Lynn M. Stokes
- Division of Natural Sciences, Indiana Wesleyan University, Marion, IN 46953, USA; (E.D.D.); (L.M.S.); (B.M.B.); (K.N.S.); (A.M.H.); (J.M.B.)
| | - Brad M. Burchell
- Division of Natural Sciences, Indiana Wesleyan University, Marion, IN 46953, USA; (E.D.D.); (L.M.S.); (B.M.B.); (K.N.S.); (A.M.H.); (J.M.B.)
| | - Kathryn N. Shaffer
- Division of Natural Sciences, Indiana Wesleyan University, Marion, IN 46953, USA; (E.D.D.); (L.M.S.); (B.M.B.); (K.N.S.); (A.M.H.); (J.M.B.)
| | - Austin M. Huntington
- Division of Natural Sciences, Indiana Wesleyan University, Marion, IN 46953, USA; (E.D.D.); (L.M.S.); (B.M.B.); (K.N.S.); (A.M.H.); (J.M.B.)
| | - Jennifer M. Baker
- Division of Natural Sciences, Indiana Wesleyan University, Marion, IN 46953, USA; (E.D.D.); (L.M.S.); (B.M.B.); (K.N.S.); (A.M.H.); (J.M.B.)
| | - Suvarna Nadendla
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (S.N.); (M.G.G.)
| | - Michelle G. Giglio
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (S.N.); (M.G.G.)
| | - Kelly S. Bender
- Department of Microbiology, Southern Illinois University, Carbondale, IL 62901, USA; (K.S.B.); (M.T.M.)
| | | | - Robert E. Blankenship
- Departments of Biology and Chemistry, Washington University in Saint Louis, St. Louis, MO 63130, USA;
| | - Michael T. Madigan
- Department of Microbiology, Southern Illinois University, Carbondale, IL 62901, USA; (K.S.B.); (M.T.M.)
| | - W. Matthew Sattley
- Division of Natural Sciences, Indiana Wesleyan University, Marion, IN 46953, USA; (E.D.D.); (L.M.S.); (B.M.B.); (K.N.S.); (A.M.H.); (J.M.B.)
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Martins CHG, Abrão F, Moraes TS, Oliveira PF, Tavares DC, Magalhães LG, Galvão FC, Veneziani RCS, Ambrósio SR. Kaurenoic acid and its sodium salt derivative: antibacterial activity against Porphyromonas gingivalis and their mechanism of action. Future Microbiol 2018; 13:1585-1601. [DOI: 10.2217/fmb-2018-0140] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Aim: To evaluate the antibacterial activity of 12 kaurane-type diterpenes against a panel of bacteria that cause endodontic infection. Methods & materials: We conducted tests against bacteria in the planktonic or in the sessile mode, cytotoxic assays for the most promising compounds against human normal lung fibroblast cells, and Porphyromonas gingivalis (ATCC 33277) proteomic analysis. Results & conclusion: Kaurenoic acid and its salt exhibited satisfactory antibacterial action against the evaluated bacteria. Proteomic analysis suggested that these compounds might interfere in bacterial metabolism and virulence factor expression. Kaurane-type diterpenes are an important class of natural products and should be considered in the search for new irrigating solutions to treat endodontic infections.
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Affiliation(s)
- Carlos HG Martins
- Research Laboratory of Applied Microbiology, University of Franca - UNIFRAN, Franca, 14404-600, São Paulo, Brazil
| | - Fariza Abrão
- Research Laboratory of Applied Microbiology, University of Franca - UNIFRAN, Franca, 14404-600, São Paulo, Brazil
| | - Thaís S Moraes
- Research Laboratory of Applied Microbiology, University of Franca - UNIFRAN, Franca, 14404-600, São Paulo, Brazil
| | - Pollyanna F Oliveira
- Laboratory of Mutagenesis, University of Franca - UNIFRAN, Franca, 14404-600, São Paulo, Brazil
| | - Denise C Tavares
- Laboratory of Mutagenesis, University of Franca - UNIFRAN, Franca, 14404-600, São Paulo, Brazil
| | - Lizandra G Magalhães
- Nucleus of Research in Sciences & Technology, University of Franca - UNIFRAN, 14404-600, São Paulo, Brazil
| | - Fábio C Galvão
- Department of Biological Sciences, São Paulo State University - UNESP, Araraquara, 14800-901, São Paulo, Brazil
| | - Rodrigo CS Veneziani
- Nucleus of Research in Sciences & Technology, University of Franca - UNIFRAN, 14404-600, São Paulo, Brazil
| | - Sérgio R Ambrósio
- Nucleus of Research in Sciences & Technology, University of Franca - UNIFRAN, 14404-600, São Paulo, Brazil
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