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Antonets KS, Belousov MV, Sulatskaya AI, Belousova ME, Kosolapova AO, Sulatsky MI, Andreeva EA, Zykin PA, Malovichko YV, Shtark OY, Lykholay AN, Volkov KV, Kuznetsova IM, Turoverov KK, Kochetkova EY, Bobylev AG, Usachev KS, Demidov ON, Tikhonovich IA, Nizhnikov AA. Accumulation of storage proteins in plant seeds is mediated by amyloid formation. PLoS Biol 2020; 18:e3000564. [PMID: 32701952 PMCID: PMC7377382 DOI: 10.1371/journal.pbio.3000564] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Accepted: 06/19/2020] [Indexed: 02/04/2023] Open
Abstract
Amyloids are protein aggregates with a highly ordered spatial structure giving them unique physicochemical properties. Different amyloids not only participate in the development of numerous incurable diseases but control vital functions in archaea, bacteria and eukarya. Plants are a poorly studied systematic group in the field of amyloid biology. Amyloid properties have not yet been demonstrated for plant proteins under native conditions in vivo. Here we show that seeds of garden pea Pisum sativum L. contain amyloid-like aggregates of storage proteins, the most abundant one, 7S globulin Vicilin, forms bona fide amyloids in vivo and in vitro. Full-length Vicilin contains 2 evolutionary conserved β-barrel domains, Cupin-1.1 and Cupin-1.2, that self-assemble in vitro into amyloid fibrils with similar physicochemical properties. However, Cupin-1.2 fibrils unlike Cupin-1.1 can seed Vicilin fibrillation. In vivo, Vicilin forms amyloids in the cotyledon cells that bind amyloid-specific dyes and possess resistance to detergents and proteases. The Vicilin amyloid accumulation increases during seed maturation and wanes at germination. Amyloids of Vicilin resist digestion by gastrointestinal enzymes, persist in canned peas, and exhibit toxicity for yeast and mammalian cells. Our finding for the first time reveals involvement of amyloid formation in the accumulation of storage proteins in plant seeds.
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Affiliation(s)
- Kirill S. Antonets
- All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, Russia
- St. Petersburg State University, St. Petersburg, Russia
| | - Mikhail V. Belousov
- All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, Russia
- St. Petersburg State University, St. Petersburg, Russia
| | - Anna I. Sulatskaya
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
| | - Maria E. Belousova
- All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, Russia
| | - Anastasiia O. Kosolapova
- All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, Russia
- St. Petersburg State University, St. Petersburg, Russia
| | - Maksim I. Sulatsky
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
| | | | | | - Yury V. Malovichko
- All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, Russia
- St. Petersburg State University, St. Petersburg, Russia
| | - Oksana Y. Shtark
- All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, Russia
| | | | | | | | | | | | - Alexander G. Bobylev
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region, Russia
| | - Konstantin S. Usachev
- Laboratory of Structural Biology, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Oleg. N. Demidov
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
- INSERM UMR1231, UBFC, Dijon, France
| | - Igor A. Tikhonovich
- All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, Russia
- St. Petersburg State University, St. Petersburg, Russia
| | - Anton A. Nizhnikov
- All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, Russia
- St. Petersburg State University, St. Petersburg, Russia
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Kosolapova AO, Belousov MV, Sulatskaya AI, Belousova ME, Sulatsky MI, Antonets KS, Volkov KV, Lykholay AN, Shtark OY, Vasileva EN, Zhukov VA, Ivanova AN, Zykin PA, Kuznetsova IM, Turoverov KK, Tikhonovich IA, Nizhnikov AA. Two Novel Amyloid Proteins, RopA and RopB, from the Root Nodule Bacterium Rhizobium leguminosarum. Biomolecules 2019; 9:biom9110694. [PMID: 31690032 PMCID: PMC6920782 DOI: 10.3390/biom9110694] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 10/29/2019] [Accepted: 10/31/2019] [Indexed: 12/14/2022] Open
Abstract
Amyloids represent protein fibrils with a highly ordered spatial structure, which not only cause dozens of incurable human and animal diseases but also play vital biological roles in Archaea, Bacteria, and Eukarya. Despite the fact that association of bacterial amyloids with microbial pathogenesis and infectious diseases is well known, there is a lack of information concerning the amyloids of symbiotic bacteria. In this study, using the previously developed proteomic method for screening and identification of amyloids (PSIA), we identified amyloidogenic proteins in the proteome of the root nodule bacterium Rhizobium leguminosarum. Among 54 proteins identified, we selected two proteins, RopA and RopB, which are predicted to have β-barrel structure and are likely to be involved in the control of plant-microbial symbiosis. We demonstrated that the full-length RopA and RopB form bona fide amyloid fibrils in vitro. In particular, these fibrils are β-sheet-rich, bind Thioflavin T (ThT), exhibit green birefringence upon staining with Congo Red (CR), and resist treatment with ionic detergents and proteases. The heterologously expressed RopA and RopB intracellularly aggregate in yeast and assemble into amyloid fibrils at the surface of Escherichia coli. The capsules of the R. leguminosarum cells bind CR, exhibit green birefringence, and contain fibrils of RopA and RopB in vivo.
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Affiliation(s)
- Anastasiia O Kosolapova
- Laboratory for Proteomics of Supra-Organismal Systems, All-Russia Research Institute for Agricultural Microbiology (ARRIAM), 196608 St. Petersburg, Russia.
- Faculty of Biology, St. Petersburg State University (SPbSU), 199034 St. Petersburg, Russia.
| | - Mikhail V Belousov
- Laboratory for Proteomics of Supra-Organismal Systems, All-Russia Research Institute for Agricultural Microbiology (ARRIAM), 196608 St. Petersburg, Russia.
- Faculty of Biology, St. Petersburg State University (SPbSU), 199034 St. Petersburg, Russia.
| | - Anna I Sulatskaya
- Laboratory of Structural Dynamics, Stability and Folding of Proteins, Institute of Cytology of the Russian Academy of Sciences, 194064 St. Petersburg, Russia.
| | - Maria E Belousova
- Laboratory for Proteomics of Supra-Organismal Systems, All-Russia Research Institute for Agricultural Microbiology (ARRIAM), 196608 St. Petersburg, Russia.
| | - Maksim I Sulatsky
- Laboratory of Cell Morphology, Institute of Cytology of the Russian Academy of Sciences, 194064 St. Petersburg, Russia.
| | - Kirill S Antonets
- Laboratory for Proteomics of Supra-Organismal Systems, All-Russia Research Institute for Agricultural Microbiology (ARRIAM), 196608 St. Petersburg, Russia.
- Faculty of Biology, St. Petersburg State University (SPbSU), 199034 St. Petersburg, Russia.
| | - Kirill V Volkov
- Research Resource Center "Molecular and Cell Technologies", Research Park, St. Petersburg State University (SPbSU), 199034 St. Petersburg, Russia.
| | - Anna N Lykholay
- Research Resource Center "Molecular and Cell Technologies", Research Park, St. Petersburg State University (SPbSU), 199034 St. Petersburg, Russia.
| | - Oksana Y Shtark
- Department of Biotechnology, All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, 196608, Russia.
| | - Ekaterina N Vasileva
- Faculty of Biology, St. Petersburg State University (SPbSU), 199034 St. Petersburg, Russia.
- Department of Biotechnology, All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, 196608, Russia.
| | - Vladimir A Zhukov
- Department of Biotechnology, All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, 196608, Russia.
| | - Alexandra N Ivanova
- Research Resource Center "Molecular and Cell Technologies", Research Park, St. Petersburg State University (SPbSU), 199034 St. Petersburg, Russia.
- Komarov Botanical Institute RAS, 197376 Komarov Botanical Institute RAS, Russia.
| | - Pavel A Zykin
- Faculty of Biology, St. Petersburg State University (SPbSU), 199034 St. Petersburg, Russia.
| | - Irina M Kuznetsova
- Laboratory of Structural Dynamics, Stability and Folding of Proteins, Institute of Cytology of the Russian Academy of Sciences, 194064 St. Petersburg, Russia.
| | - Konstantin K Turoverov
- Laboratory of Structural Dynamics, Stability and Folding of Proteins, Institute of Cytology of the Russian Academy of Sciences, 194064 St. Petersburg, Russia.
- Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia.
| | - Igor A Tikhonovich
- Faculty of Biology, St. Petersburg State University (SPbSU), 199034 St. Petersburg, Russia.
- Department of Biotechnology, All-Russia Research Institute for Agricultural Microbiology (ARRIAM), St. Petersburg, 196608, Russia.
| | - Anton A Nizhnikov
- Laboratory for Proteomics of Supra-Organismal Systems, All-Russia Research Institute for Agricultural Microbiology (ARRIAM), 196608 St. Petersburg, Russia.
- Faculty of Biology, St. Petersburg State University (SPbSU), 199034 St. Petersburg, Russia.
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Antonets KS, Onishchuk OP, Kurchak ON, Volkov KV, Lykholay AN, Andreeva EA, Andronov EE, Pinaev AG, Provorov NA, Nizhnikov AA. [Proteomic Profile of the Bacterium Sinorhizobium meliloti Depends on Its Life Form and Host Plant Species]. Mol Biol (Mosk) 2018; 52:898-904. [PMID: 30363063 DOI: 10.1134/s0026898418050038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 03/13/2018] [Indexed: 11/23/2022]
Abstract
The importance of root nodule bacteria in biotechnology is determined by their distinctive feature: symbiotic nitrogen fixation resulting in the production of organic nitrogen-containing compounds. While interacting with host legume plants, the cells of these bacteria undergo global changes at all levels of expression of genetic information leading to the formation in root nodules of so-called bacteroids functioning as nitrogen fixation factories. The molecular mechanisms underlying plant-microbial symbiosis are actively investigated, and one of the most interesting and poorly studied aspects of this problem is the species-specificity of interaction between root nodule bacteria and host plants. In this work we have performed the proteomic analysis of the Sinorhizobium meliloti bacteroids isolated from two legume species: alfalfa (Medicago sativa L.) and yellow sweet clover (Melilotus officinalis L.). It has been shown that the S. meliloti bacteroids produce a lot of proteins (many of them associated with symbiosis) in a host-specific manner, i.e., only in certain host plant species. It has been demonstrated for the first time that the levels of expression in bacteroids of the genes encoding the ExoZ and MscL proteins responsible for the synthesis of surface lipopolysaccha-rides and formation of a large conductance mechanosensitive channel, respectively, depend on a host plant species that confirms the results of proteomic analysis. Overall, our data show that the regulation of bacteroid development by the host plant has species-specific features.
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Affiliation(s)
- K S Antonets
- All-Russia Research Institute of Agricultural Microbiology, St. Petersburg, Pushkin, 196608 Russia.,St. Petersburg State University, St. Petersburg, 199034 Russia
| | - O P Onishchuk
- All-Russia Research Institute of Agricultural Microbiology, St. Petersburg, Pushkin, 196608 Russia
| | - O N Kurchak
- All-Russia Research Institute of Agricultural Microbiology, St. Petersburg, Pushkin, 196608 Russia
| | - K V Volkov
- St. Petersburg State University, St. Petersburg, 199034 Russia
| | - A N Lykholay
- St. Petersburg State University, St. Petersburg, 199034 Russia
| | - E A Andreeva
- St. Petersburg State University, St. Petersburg, 199034 Russia
| | - E E Andronov
- All-Russia Research Institute of Agricultural Microbiology, St. Petersburg, Pushkin, 196608 Russia.,St. Petersburg State University, St. Petersburg, 199034 Russia
| | - A G Pinaev
- All-Russia Research Institute of Agricultural Microbiology, St. Petersburg, Pushkin, 196608 Russia
| | - N A Provorov
- All-Russia Research Institute of Agricultural Microbiology, St. Petersburg, Pushkin, 196608 Russia
| | - A A Nizhnikov
- All-Russia Research Institute of Agricultural Microbiology, St. Petersburg, Pushkin, 196608 Russia.,St. Petersburg State University, St. Petersburg, 199034 Russia.,
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Lykholay AN, Vladimirov IA, Andreeva EA, Smirnov VG, Voylokov AV. [Genetics of anthocyaninless rye]. Genetika 2014; 50:1245-1249. [PMID: 25720256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Six nonallelic genes have been discovered in rye, the recessive mutations of which lead to a lack of anthocyanin. Crosses with these mutants showed that 13 new anthocyaninless lines carry mutations in the gene vi1, whereas vi2/6 mutations were identified only in single cases. Inheritance of the vi1/6 mutations in the progeny of hybrids with the wild type (Line 7, L7) corresponds to a monohybrid segregation. Segregation for three of these mutations (vi2, vi4, and vi5) in hybrids with line 2 is characterized by anthocyaninless deficiency in plants. We discuss the reasons for such deviations and the previously published data for the identification of the six anthocyanin pigmentation genes in the rye using trisomic analysis.
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