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Kobayashi R, Ueno H, Okazaki KI, Noji H. Molecular mechanism on forcible ejection of ATPase inhibitory factor 1 from mitochondrial ATP synthase. Nat Commun 2023; 14:1682. [PMID: 37002198 PMCID: PMC10066207 DOI: 10.1038/s41467-023-37182-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 03/06/2023] [Indexed: 04/03/2023] Open
Abstract
IF1 is a natural inhibitor protein for mitochondrial FoF1 ATP synthase that blocks catalysis and rotation of the F1 by deeply inserting its N-terminal helices into F1. A unique feature of IF1 is condition-dependent inhibition; although IF1 inhibits ATP hydrolysis by F1, IF1 inhibition is relieved under ATP synthesis conditions. To elucidate this condition-dependent inhibition mechanism, we have performed single-molecule manipulation experiments on IF1-inhibited bovine mitochondrial F1 (bMF1). The results show that IF1-inhibited F1 is efficiently activated only when F1 is rotated in the clockwise (ATP synthesis) direction, but not in the counterclockwise direction. The observed rotational-direction-dependent activation explains the condition-dependent mechanism of IF1 inhibition. Investigation of mutant IF1 with N-terminal truncations shows that the interaction with the γ subunit at the N-terminal regions is crucial for rotational-direction-dependent ejection, and the middle long helix is responsible for the inhibition of F1.
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Affiliation(s)
- Ryohei Kobayashi
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8656, Japan
- Research Center for Computational Science, Institute for Molecular Science, Okazaki, Aichi, 444-8585, Japan
| | - Hiroshi Ueno
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Kei-Ichi Okazaki
- Research Center for Computational Science, Institute for Molecular Science, Okazaki, Aichi, 444-8585, Japan
- The Graduate University for Advanced Studies, SOKENDAI, Okazaki, Aichi, 444-8585, Japan
| | - Hiroyuki Noji
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8656, Japan.
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Kwak SY, Chung I, Kang J, Perakakis N, Yoo EH, Lee J, Jung HT, Mun BR, Choi WS, Kim OY, Kim S, Kim EK, Oh H, Mantzoros CS, Chung JH, Kim HS, Shin MJ. Sex specific effect of ATPase inhibitory factor 1 on body weight: studies in high fat diet induced obese mice and genetic association studies in humans. Metabolism 2020; 105:154171. [PMID: 32006557 DOI: 10.1016/j.metabol.2020.154171] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 01/21/2020] [Accepted: 01/24/2020] [Indexed: 10/25/2022]
Abstract
BACKGROUND Based on the metabolic effect of exogenous ATPase inhibitory factor 1 (IF1) on glucose metabolism, we tested whether IF1 treatment is effective in ameliorating weight gain and whether its effects are sex specific. METHODS HFD-fed C57BL/6 mice were treated with IF1 (5 mg/kg body weight, injected intraperitoneally). The underlying mechanisms of effect of IF1 on body weight were investigated in vitro and in vivo. Associations between genotypes of IF1 and obesity and relevant phenotype were further tested at the population level. RESULTS Chronic treatment with IF1 significantly decreased body weight gain by regulating food intake of HFD-fed male mice. IF1 activated the AKT/mTORC pathway and modulated the expression of appetite genes in the hypothalamus of HFD-fed male mice and its effect was confirmed in hypothalamic cell lines as well as hypothalamic primary cells. This required the interaction of IF1 with β-F1-ATPase on the plasma membrane of hypothalamic cells, which led to an increase in extracellular ATP production. In addition, IF1 treatment showed sympathetic nerve activation as measured by serum norepinephrine levels and UCP-1 expression in the subcutaneous fat of HFD-fed male mice. Notably, administration of recombinant IF1 to HFD-fed ovariectomized female mice showed remarkable reductions in food intake as well as body weight, which was not observed in wild-type 5-week female mice. Lastly, sex-specific genotype associations of IF1 with obesity prevalence and metabolic traits were demonstrated at the population level in humans. IF1 genetic variant (rs3767303) was significantly associated with lower prevalence of obesity and lower levels of body mass index, waist circumference, hemoglobin A1c, and glucose response area only in male participants. CONCLUSION IF1 is involved in weight regulation by controlling food intake and potentially sympathetic nerve activation in a sex-specific manner.
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Affiliation(s)
- So-Young Kwak
- Department of Public Health Sciences, BK21PLUS Program in Embodiment: Health-Society Interaction, Graduate School, Korea University, Seoul 02841, Republic of Korea
| | - InHyeok Chung
- Department of Public Health Sciences, BK21PLUS Program in Embodiment: Health-Society Interaction, Graduate School, Korea University, Seoul 02841, Republic of Korea
| | - Joon Kang
- Department of Biotechnology, CHA University, Gyeonggi-do 11160, Republic of Korea
| | - Nikolaos Perakakis
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Harvard University, Boston, MA 02215, USA
| | - Eun Hye Yoo
- Department of Public Health Sciences, BK21PLUS Program in Embodiment: Health-Society Interaction, Graduate School, Korea University, Seoul 02841, Republic of Korea
| | - Juhee Lee
- Department of Public Health Sciences, BK21PLUS Program in Embodiment: Health-Society Interaction, Graduate School, Korea University, Seoul 02841, Republic of Korea
| | - Hun Taek Jung
- Department of Biotechnology, CHA University, Gyeonggi-do 11160, Republic of Korea
| | - Bo-Ram Mun
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Won-Seok Choi
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Oh Yoen Kim
- Department of Food and Nutrition, Dong-A University, Busan 49315, Republic of Korea
| | - Seolsong Kim
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Republic of Korea
| | - Eun-Kyoung Kim
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Republic of Korea; Neurometabolomics Research Center, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Republic of Korea
| | - Hannah Oh
- Department of Public Health Sciences, BK21PLUS Program in Embodiment: Health-Society Interaction, Graduate School, Korea University, Seoul 02841, Republic of Korea
| | - Christos S Mantzoros
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Harvard University, Boston, MA 02215, USA
| | - Ji Hyung Chung
- Department of Biotechnology, CHA University, Gyeonggi-do 11160, Republic of Korea.
| | - Hyeon Soo Kim
- Department of Anatomy, Korea University College of Medicine, Seoul 02841, Republic of Korea.
| | - Min-Jeong Shin
- Department of Public Health Sciences, BK21PLUS Program in Embodiment: Health-Society Interaction, Graduate School, Korea University, Seoul 02841, Republic of Korea.
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Lee HJ, Moon J, Chung I, Chung JH, Park C, Lee JO, Han JA, Kang MJ, Yoo EH, Kwak SY, Jo G, Park W, Park J, Kim KM, Lim S, Ngoei KRW, Ling NXY, Oakhill JS, Galic S, Murray-Segal L, Kemp BE, Mantzoros CS, Krauss RM, Shin MJ, Kim HS. ATP synthase inhibitory factor 1 (IF1), a novel myokine, regulates glucose metabolism by AMPK and Akt dual pathways. FASEB J 2019; 33:14825-14840. [PMID: 31670977 DOI: 10.1096/fj.201901440rr] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 09/17/2019] [Indexed: 12/11/2022]
Abstract
ATPase inhibitory factor 1 (IF1) is an ATP synthase-interacting protein that suppresses the hydrolysis activity of ATP synthase. In this study, we observed that the expression of IF1 was up-regulated in response to electrical pulse stimulation of skeletal muscle cells and in exercized mice and healthy men. IF1 stimulates glucose uptake via AMPK in skeletal muscle cells and primary cultured myoblasts. Reactive oxygen species and Rac family small GTPase 1 (Rac1) function in the upstream and downstream of AMPK, respectively, in IF1-mediated glucose uptake. In diabetic animal models, the administration of recombinant IF1 improved glucose tolerance and down-regulated blood glucose level. In addition, IF1 inhibits ATP hydrolysis by β-F1-ATPase in plasma membrane, thereby increasing extracellular ATP and activating the protein kinase B (Akt) pathway, ultimately leading to glucose uptake. Thus, we suggest that IF1 is a novel myokine and propose a mechanism by which AMPK and Akt contribute independently to IF1-mediated improvement of glucose tolerance impairment. These results demonstrate the importance of IF1 as a potential antidiabetic agent.-Lee, H. J., Moon, J., Chung, I., Chung, J. H., Park, C., Lee, J. O., Han, J. A., Kang, M. J., Yoo, E. H., Kwak, S.-Y., Jo, G., Park, W., Park, J., Kim, K. M., Lim, S., Ngoei, K. R. W., Ling, N. X. Y., Oakhill, J. S., Galic, S., Murray-Segal, L., Kemp, B. E., Mantzoros, C. S., Krauss, R. M., Shin, M.-J., Kim, H. S. ATP synthase inhibitory factor 1 (IF1), a novel myokine, regulates glucose metabolism by AMPK and Akt dual pathways.
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Affiliation(s)
- Hye Jeong Lee
- Department of Anatomy, Korea University College of Medicine, Seoul, South Korea
| | - Jiyoung Moon
- Department of Public Health Sciences, Korea University, Seoul, South Korea
- Laboratory of Gene Regulation and Metabolism, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - InHyeok Chung
- Department of Public Health Sciences, Korea University, Seoul, South Korea
| | - Ji Hyung Chung
- Department of Biotechnology, CHA University, Pocheon, South Korea
| | - Chan Park
- Department of Biotechnology, CHA University, Pocheon, South Korea
| | - Jung Ok Lee
- Department of Anatomy, Korea University College of Medicine, Seoul, South Korea
| | - Jeong Ah Han
- Department of Anatomy, Korea University College of Medicine, Seoul, South Korea
| | - Min Ju Kang
- Department of Anatomy, Korea University College of Medicine, Seoul, South Korea
| | - Eun Hye Yoo
- Department of Public Health Sciences, Korea University, Seoul, South Korea
| | - So-Young Kwak
- Department of Public Health Sciences, Korea University, Seoul, South Korea
| | - Garam Jo
- Department of Public Health Sciences, Korea University, Seoul, South Korea
| | - Wonil Park
- Department of Physical Education, Korea University, Seoul, South Korea
| | - Jonghoon Park
- Department of Physical Education, Korea University, Seoul, South Korea
| | - Kyoung Min Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Soo Lim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Kevin R W Ngoei
- Protein Chemistry and Metabolism, University of Melbourne, Fitzroy, Victoria, Australia
| | - Naomi X Y Ling
- Metabolic Signaling Laboratory, St Vincenf's Institute of Medical Research, University of Melbourne, Fitzroy, Victoria, Australia
| | - Jonathan S Oakhill
- Metabolic Signaling Laboratory, St Vincenf's Institute of Medical Research, University of Melbourne, Fitzroy, Victoria, Australia
- Mary MacKillop Institute for Health Research, Australian Catholic University, Melbourne, Victoria, Australia
| | - Sandra Galic
- Protein Chemistry and Metabolism, University of Melbourne, Fitzroy, Victoria, Australia
| | - Lisa Murray-Segal
- Protein Chemistry and Metabolism, University of Melbourne, Fitzroy, Victoria, Australia
| | - Bruce E Kemp
- Protein Chemistry and Metabolism, University of Melbourne, Fitzroy, Victoria, Australia
- Mary MacKillop Institute for Health Research, Australian Catholic University, Melbourne, Victoria, Australia
| | - Christos S Mantzoros
- Division of Endocrinology, Beth-Israel Deaconess Medical Center-Harvard Medical School, Boston, Massachusetts, USA
| | - Ronald M Krauss
- Children's Hospital Oakland Research Institute, Oakland, California, USA
| | - Min-Jeong Shin
- Department of Public Health Sciences, Korea University, Seoul, South Korea
| | - Hyeon Soo Kim
- Department of Anatomy, Korea University College of Medicine, Seoul, South Korea
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Haraux F, Lombès A. Kinetic analysis of ATP hydrolysis by complex V in four murine tissues: Towards an assay suitable for clinical diagnosis. PLoS One 2019; 14:e0221886. [PMID: 31461494 PMCID: PMC6713359 DOI: 10.1371/journal.pone.0221886] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 08/17/2019] [Indexed: 12/12/2022] Open
Abstract
Background ATP synthase, the mitochondrial complex V, plays a major role in bioenergetics and its defects lead to severe diseases. Lack of a consensual protocol for the assay of complex V activity probably explains the under-representation of complex V defect among mitochondrial diseases. The aim of this work was to elaborate a fast, simple and reliable method to check the maximal complex V capacity in samples relevant to clinical diagnosis. Methods Using homogenates from four different murine organs, we tested the use of dodecylmaltoside, stability of the activity, linearity with protein amount, sensitivity to oligomycin and to exogenous inhibitory factor 1 (IF1), influence of freezing, and impact of mitochondrial purification. Results We obtained organ-dependent, reproducible and stable complex V specific activities, similar with fresh and frozen organs. Similar inhibition by oligomycin and exogenous IF1 demonstrated tight coupling between F1 and F0 domains. The Michaelis constant for MgATP had close values for all organs, in the 150–220 μM range. Complex V catalytic turnover rate, as measured in preparations solubilized in detergent using immunotitration and activity measurements, was more than three times higher in extracts from brain or muscle than in extracts from heart or liver. This tissue specificity suggested post-translational modifications. Concomitant measurement of respiratory activities showed only slightly different complex II/complex V ratio in the four organs. In contrast, complex I/complex V ratio differed in brain as compared to the three other organs because of a high complex I activity in brain. Mitochondria purification preserved these ratios, except for brain where selective degradation of complex I occurred. Therefore, mitochondrial purification could introduce a biased enzymatic evaluation. Conclusion Altogether, this work demonstrates that a reliable assay of complex V activity is perfectly possible with very small samples from frozen biopsies, which was confirmed using control and deficient human muscles.
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Affiliation(s)
- Francis Haraux
- Institute for Integrative Biology of the Cell (I2BC), CEA, Gif-sur-Yvette, France.,UMR 9198, CNRS, Gif-sur-Yvette, France.,Université Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Anne Lombès
- Institut Cochin, Unité U1016, INSERM, Paris, France.,UMR 8104, CNRS, Paris, France.,Université Paris 5, Paris, France
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Le Breton N, Adrianaivomananjaona T, Gerbaud G, Etienne E, Bisetto E, Dautant A, Guigliarelli B, Haraux F, Martinho M, Belle V. Dimerization interface and dynamic properties of yeast IF1 revealed by Site-Directed Spin Labeling EPR spectroscopy. BIOCHIMICA ET BIOPHYSICA ACTA 2016; 1857:89-97. [PMID: 26518384 DOI: 10.1016/j.bbabio.2015.10.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 10/21/2015] [Accepted: 10/25/2015] [Indexed: 11/21/2022]
Abstract
The mitochondrial ATPase inhibitor, IF1, regulates the activity of the mitochondrial ATP synthase. The oligomeric state of IF1 related to pH is crucial for its inhibitory activity. Although extensive structural studies have been performed to characterize the oligomeric states of bovine IF1, only little is known concerning those of yeast IF1. While bovine IF1 can be found as an inhibitory dimer at low pH and a non-inhibitory tetramer at high pH, a monomer/dimer equilibrium has been described for yeast IF1, high pH values favoring the monomeric state. Combining different strategies involving the grafting of nitroxide spin labels combined with Electron Paramagnetic Resonance (EPR) spectroscopy, the present study brings the first structural characterization, at the residue level, of yeast IF1 in its dimeric form. The results show that the dimerization interface involves the central region of the peptide revealing that the dimer corresponds to a non-inhibitory state. Moreover, we demonstrate that the C-terminal region of the peptide is highly dynamic and that this segment is probably folded back onto the central region. Finally, the pH-dependence of the inter-label distance distribution has been observed indicating a conformational change between two structural states in the dimer.
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Affiliation(s)
- Nolwenn Le Breton
- Aix-Marseille Université, CNRS, BIP UMR 7281, 31 chemin J. Aiguier, F-13402 Marseille, France
| | - Tiona Adrianaivomananjaona
- Lifesearch, 72 rue du Fauboug St Honoré, F-75008 Paris, France; CEA, Institut de Biologie et de Technologies de Saclay IBITECS, SB2SM, F-91191 Gif sur Yvette, France; CEA, CNRS, Université Paris Sud, Institut de Biologie Intégrative de la Cellule I2BC, UMR 9198, F-91191 Gif sur Yvette, France
| | - Guillaume Gerbaud
- Aix-Marseille Université, CNRS, BIP UMR 7281, 31 chemin J. Aiguier, F-13402 Marseille, France
| | - Emilien Etienne
- Aix-Marseille Université, CNRS, BIP UMR 7281, 31 chemin J. Aiguier, F-13402 Marseille, France
| | - Elena Bisetto
- CEA, Institut de Biologie et de Technologies de Saclay IBITECS, SB2SM, F-91191 Gif sur Yvette, France; Department of Biomedical Sciences and Technologies, University of Udine, Piazzale Kolbe 4, I-33100 Udine, Italy
| | - Alain Dautant
- University Bordeaux-CNRS, IBGC, UMR 5095, 1 rue Camille Saint-Saëns, F-33000 Bordeaux, France
| | - Bruno Guigliarelli
- Aix-Marseille Université, CNRS, BIP UMR 7281, 31 chemin J. Aiguier, F-13402 Marseille, France
| | - Francis Haraux
- CEA, Institut de Biologie et de Technologies de Saclay IBITECS, SB2SM, F-91191 Gif sur Yvette, France; CEA, CNRS, Université Paris Sud, Institut de Biologie Intégrative de la Cellule I2BC, UMR 9198, F-91191 Gif sur Yvette, France.
| | - Marlène Martinho
- Aix-Marseille Université, CNRS, BIP UMR 7281, 31 chemin J. Aiguier, F-13402 Marseille, France
| | - Valérie Belle
- Aix-Marseille Université, CNRS, BIP UMR 7281, 31 chemin J. Aiguier, F-13402 Marseille, France.
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Interactions involved in grasping and locking of the inhibitory peptide IF1 by mitochondrial ATP synthase. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2014; 1837:761-72. [DOI: 10.1016/j.bbabio.2014.01.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 01/24/2014] [Accepted: 01/29/2014] [Indexed: 11/23/2022]
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Differential Expression ESTs Associated with Fluorosis in Rats Liver. Comp Funct Genomics 2012; 2012:208390. [PMID: 22400010 PMCID: PMC3286904 DOI: 10.1155/2012/208390] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Accepted: 11/26/2011] [Indexed: 12/22/2022] Open
Abstract
The fluoride has volcanic activity and abundantly exists in environment combining with other elements as fluoride compounds. Recent researches indicated that the molecular mechanisms of intracellular fluoride toxicity were very complex. However, the molecular mechanisms underlying the effects on gene expression of chronic fluoride-induced damage is unknown, especially the detailed regulatory process of mitochondria. In the present study, we screened the differential expression ESTs associated with fluorosis by DDRT-PCR in rat liver. We gained 8 genes, 3 new ESTs, and 1 unknown function sequence and firstly demonstrated that microsomal glutathione S-transferase 1 (MGST1), ATP synthase H+ transporting mitochondrial F0 complex subunit C1, selenoprotein S, mitochondrial IF1 protein, and mitochondrial succinyl-CoA synthetase alpha subunit were participated in mitochondria metabolism, functional and structural damage process caused by chronic fluorosis. This information will be very helpful for understanding the molecular mechanisms of fluorosis.
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