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Schlüter L, Busche T, Bondzio L, Hütten A, Niehaus K, Schneiker-Bekel S, Pühler A, Kalinowski J. Sigma Factor Engineering in Actinoplanes sp. SE50/110: Expression of the Alternative Sigma Factor Gene ACSP50_0507 (σH As) Enhances Acarbose Yield and Alters Cell Morphology. Microorganisms 2024; 12:1241. [PMID: 38930623 PMCID: PMC11205660 DOI: 10.3390/microorganisms12061241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 06/11/2024] [Accepted: 06/17/2024] [Indexed: 06/28/2024] Open
Abstract
Sigma factors are transcriptional regulators that are part of complex regulatory networks for major cellular processes, as well as for growth phase-dependent regulation and stress response. Actinoplanes sp. SE50/110 is the natural producer of acarbose, an α-glucosidase inhibitor that is used in diabetes type 2 treatment. Acarbose biosynthesis is dependent on growth, making sigma factor engineering a promising tool for metabolic engineering. ACSP50_0507 is a homolog of the developmental and osmotic-stress-regulating Streptomyces coelicolor σHSc. Therefore, the protein encoded by ACSP50_0507 was named σHAs. Here, an Actinoplanes sp. SE50/110 expression strain for the alternative sigma factor gene ACSP50_0507 (sigHAs) achieved a two-fold increased acarbose yield with acarbose production extending into the stationary growth phase. Transcriptome sequencing revealed upregulation of acarbose biosynthesis genes during growth and at the late stationary growth phase. Genes that are transcriptionally activated by σHAs frequently code for secreted or membrane-associated proteins. This is also mirrored by the severely affected cell morphology, with hyperbranching, deformed and compartmentalized hyphae. The dehydrated cell morphology and upregulation of further genes point to a putative involvement in osmotic stress response, similar to its S. coelicolor homolog. The DNA-binding motif of σHAs was determined based on transcriptome sequencing data and shows high motif similarity to that of its homolog. The motif was confirmed by in vitro binding of recombinantly expressed σHAs to the upstream sequence of a strongly upregulated gene. Autoregulation of σHAs was observed, and binding to its own gene promoter region was also confirmed.
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Affiliation(s)
- Laura Schlüter
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, 33594 Bielefeld, Germany; (L.S.); (S.S.-B.)
| | - Tobias Busche
- Technology Platform Genomics, Center for Biotechnology, Bielefeld University, 33594 Bielefeld, Germany;
- Medical School East Westphalia-Lippe, Bielefeld University, 33594 Bielefeld, Germany
| | - Laila Bondzio
- Faculty of Physics, Bielefeld University, 33594 Bielefeld, Germany; (L.B.); (A.H.)
| | - Andreas Hütten
- Faculty of Physics, Bielefeld University, 33594 Bielefeld, Germany; (L.B.); (A.H.)
| | - Karsten Niehaus
- Proteome and Metabolome Research, Faculty of Biology, Bielefeld University, 33594 Bielefeld, Germany;
| | - Susanne Schneiker-Bekel
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, 33594 Bielefeld, Germany; (L.S.); (S.S.-B.)
- Genome Research of Industrial Microorganisms, Center for Biotechnology (CeBiTec), Bielefeld University, 33594 Bielefeld, Germany;
| | - Alfred Pühler
- Genome Research of Industrial Microorganisms, Center for Biotechnology (CeBiTec), Bielefeld University, 33594 Bielefeld, Germany;
| | - Jörn Kalinowski
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, 33594 Bielefeld, Germany; (L.S.); (S.S.-B.)
- Technology Platform Genomics, Center for Biotechnology, Bielefeld University, 33594 Bielefeld, Germany;
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2
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Meyer FM, Bramkamp M. Cell wall synthesizing complexes in Mycobacteriales. Curr Opin Microbiol 2024; 79:102478. [PMID: 38653035 DOI: 10.1016/j.mib.2024.102478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 04/04/2024] [Accepted: 04/07/2024] [Indexed: 04/25/2024]
Abstract
Members of the order Mycobacteriales are distinguished by a characteristic diderm cell envelope, setting them apart from other Actinobacteria species. In addition to the conventional peptidoglycan cell wall, these organisms feature an extra polysaccharide polymer composed of arabinose and galactose, termed arabinogalactan. The nonreducing ends of arabinose are covalently linked to mycolic acids (MAs), forming the immobile inner leaflet of the highly hydrophobic MA membrane. The contiguous outer leaflet of the MA membrane comprises trehalose mycolates and various lipid species. Similar to all actinobacteria, Mycobacteriales exhibit apical growth, facilitated by a polar localized elongasome complex. A septal cell envelope synthesis machinery, the divisome, builds instead of the cell wall structures during cytokinesis. In recent years, a growing body of knowledge has emerged regarding the cell wall synthesizing complexes of Mycobacteriales., focusing particularly on three model species: Corynebacterium glutamicum, Mycobacterium smegmatis, and Mycobacterium tuberculosis.
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Affiliation(s)
- Fabian M Meyer
- Institute for General Microbiology, Christian-Albrechts-University Kiel, Am Botanischen Garten 1-9, 24118 Kiel, Germany
| | - Marc Bramkamp
- Institute for General Microbiology, Christian-Albrechts-University Kiel, Am Botanischen Garten 1-9, 24118 Kiel, Germany.
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3
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Hart EM, Lyerly E, Bernhardt TG. The conserved σD envelope stress response monitors multiple aspects of envelope integrity in corynebacteria. PLoS Genet 2024; 20:e1011127. [PMID: 38829907 PMCID: PMC11175481 DOI: 10.1371/journal.pgen.1011127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 06/13/2024] [Accepted: 05/15/2024] [Indexed: 06/05/2024] Open
Abstract
The cell envelope fortifies bacterial cells against antibiotics and other insults. Species in the Mycobacteriales order have a complex envelope that includes an outer layer of mycolic acids called the mycomembrane (MM) and a cell wall composed of peptidoglycan and arabinogalactan. This envelope architecture is unique among bacteria and contributes significantly to the virulence of pathogenic Mycobacteriales like Mycobacterium tuberculosis. Characterization of pathways that govern envelope biogenesis in these organisms is therefore critical in understanding their biology and for identifying new antibiotic targets. To better understand MM biogenesis, we developed a cell sorting-based screen for mutants defective in the surface exposure of a porin normally embedded in the MM of the model organism Corynebacterium glutamicum. The results revealed a requirement for the conserved σD envelope stress response in porin export and identified MarP as the site-1 protease, respectively, that activate the response by cleaving the membrane-embedded anti-sigma factor. A reporter system revealed that the σD pathway responds to defects in mycolic acid and arabinogalactan biosynthesis, suggesting that the stress response has the unusual property of being induced by activating signals that arise from defects in the assembly of two distinct envelope layers. Our results thus provide new insights into how C. glutamicum and related bacteria monitor envelope integrity and suggest a potential role for members of the σD regulon in protein export to the MM.
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Affiliation(s)
- Elizabeth M. Hart
- Department of Microbiology, Harvard Medical School, Boston, Massachusetts, United States of America
- Howard Hughes Medical Institute, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Evan Lyerly
- Department of Microbiology, Harvard Medical School, Boston, Massachusetts, United States of America
- Howard Hughes Medical Institute, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Thomas G. Bernhardt
- Department of Microbiology, Harvard Medical School, Boston, Massachusetts, United States of America
- Howard Hughes Medical Institute, Harvard Medical School, Boston, Massachusetts, United States of America
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4
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Vaňková Hausnerová V, Shoman M, Kumar D, Schwarz M, Modrák M, Jirát Matějčková J, Mikesková E, Neva S, Herrmannová A, Šiková M, Halada P, Novotná I, Pajer P, Valášek LS, Převorovský M, Krásný L, Hnilicová J. RIP-seq reveals RNAs that interact with RNA polymerase and primary sigma factors in bacteria. Nucleic Acids Res 2024; 52:4604-4626. [PMID: 38348908 PMCID: PMC11077062 DOI: 10.1093/nar/gkae081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 01/24/2024] [Accepted: 01/29/2024] [Indexed: 05/09/2024] Open
Abstract
Bacteria have evolved structured RNAs that can associate with RNA polymerase (RNAP). Two of them have been known so far-6S RNA and Ms1 RNA but it is unclear if any other types of RNAs binding to RNAP exist in bacteria. To identify all RNAs interacting with RNAP and the primary σ factors, we have established and performed native RIP-seq in Bacillus subtilis, Corynebacterium glutamicum, Streptomyces coelicolor, Mycobacterium smegmatis and the pathogenic Mycobacterium tuberculosis. Besides known 6S RNAs in B. subtilis and Ms1 in M. smegmatis, we detected MTS2823, a homologue of Ms1, on RNAP in M. tuberculosis. In C. glutamicum, we discovered novel types of structured RNAs that associate with RNAP. Furthermore, we identified other species-specific RNAs including full-length mRNAs, revealing a previously unknown landscape of RNAs interacting with the bacterial transcription machinery.
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Affiliation(s)
- Viola Vaňková Hausnerová
- Laboratory of Microbial Genetics and Gene Expression, Institute of Microbiology of the Czech Academy of Sciences, Prague142 20, Czech Republic
- Laboratory of Regulatory RNAs, Faculty of Science, Charles University, Prague128 44, Czech Republic
| | - Mahmoud Shoman
- Laboratory of Microbial Genetics and Gene Expression, Institute of Microbiology of the Czech Academy of Sciences, Prague142 20, Czech Republic
- Laboratory of Regulatory RNAs, Faculty of Science, Charles University, Prague128 44, Czech Republic
| | - Dilip Kumar
- Laboratory of Microbial Genetics and Gene Expression, Institute of Microbiology of the Czech Academy of Sciences, Prague142 20, Czech Republic
| | - Marek Schwarz
- Laboratory of Bioinformatics, Institute of Microbiology of the Czech Academy of Sciences, Prague142 20, Czech Republic
| | - Martin Modrák
- Laboratory of Bioinformatics, Institute of Microbiology of the Czech Academy of Sciences, Prague142 20, Czech Republic
- Department of Bioinformatics, Second Faculty of Medicine, Charles University, Prague150 06, Czech Republic
| | - Jitka Jirát Matějčková
- Laboratory of Microbial Genetics and Gene Expression, Institute of Microbiology of the Czech Academy of Sciences, Prague142 20, Czech Republic
- Laboratory of Regulatory RNAs, Faculty of Science, Charles University, Prague128 44, Czech Republic
| | - Eliška Mikesková
- Laboratory of Microbial Genetics and Gene Expression, Institute of Microbiology of the Czech Academy of Sciences, Prague142 20, Czech Republic
- Laboratory of Regulatory RNAs, Faculty of Science, Charles University, Prague128 44, Czech Republic
| | - Silvia Neva
- Laboratory of Microbial Genetics and Gene Expression, Institute of Microbiology of the Czech Academy of Sciences, Prague142 20, Czech Republic
- Laboratory of Regulatory RNAs, Faculty of Science, Charles University, Prague128 44, Czech Republic
| | - Anna Herrmannová
- Laboratory of Regulation of Gene Expression, Institute of Microbiology of the Czech Academy of Sciences, Prague142 20, Czech Republic
| | - Michaela Šiková
- Laboratory of Microbial Genetics and Gene Expression, Institute of Microbiology of the Czech Academy of Sciences, Prague142 20, Czech Republic
| | - Petr Halada
- Laboratory of Structural Biology and Cell Signaling, Institute of Microbiology of the Czech Academy of Sciences, Vestec252 50, Czech Republic
| | - Iva Novotná
- Military Health Institute, Military Medical Agency, Prague169 02, Czech Republic
| | - Petr Pajer
- Military Health Institute, Military Medical Agency, Prague169 02, Czech Republic
| | - Leoš Shivaya Valášek
- Laboratory of Regulation of Gene Expression, Institute of Microbiology of the Czech Academy of Sciences, Prague142 20, Czech Republic
| | - Martin Převorovský
- Department of Cell Biology, Faculty of Science, Charles University, Prague128 00, Czech Republic
| | - Libor Krásný
- Laboratory of Microbial Genetics and Gene Expression, Institute of Microbiology of the Czech Academy of Sciences, Prague142 20, Czech Republic
| | - Jarmila Hnilicová
- Laboratory of Microbial Genetics and Gene Expression, Institute of Microbiology of the Czech Academy of Sciences, Prague142 20, Czech Republic
- Laboratory of Regulatory RNAs, Faculty of Science, Charles University, Prague128 44, Czech Republic
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5
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Busche T, Dostálová H, Rucká L, Holátko J, Barvík I, Štěpánek V, Pátek M, Kalinowski J. Overlapping SigH and SigE sigma factor regulons in Corynebacterium glutamicum. Front Microbiol 2023; 13:1059649. [PMID: 36925999 PMCID: PMC10012870 DOI: 10.3389/fmicb.2022.1059649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 11/15/2022] [Indexed: 03/06/2023] Open
Abstract
The sigma H (σΗ) and sigma E (σE) subunits of Corynebacterium glutamicum RNA polymerase belong to Group 4 of sigma factors, also called extracytoplasmic function (ECF) sigma factors. Genes of the C. glutamicum σΗ regulon that are involved in heat and oxidative stress response have already been defined, whereas the genes of the σE regulon, which is involved in cell surface stress response, have not been explored until now. Using the C. glutamicum RES167 strain and its derivative C. glutamicum ΔcseE with a deletion in the anti-σΕ gene, differential gene expression was analyzed by RNA sequencing. We found 296 upregulated and 398 downregulated genes in C. glutamicum ΔcseE compared to C. glutamicum RES167. To confirm the functional link between σΕ and the corresponding promoters, we tested selected promoters using the in vivo two-plasmid system with gfpuv as a reporter gene and by in vitro transcription. Analyses with RNAP+σΗ and RNAP+σΕ, which were previously shown to recognize similar promoters, proved that the σΗ and σE regulons significantly overlap. The σE-controlled genes were found to be involved for example in protein quality control (dnaK, dnaJ2, clpB, and clpC), the regulation of Clp proteases (clgR), and membrane integrity maintenance. The single-promoter analyses with σΗ and σΕ revealed that there are two groups of promoters: those which are exclusively σΗ-specific, and the other group of promoters, which are σΗ/σE-dependent. No exclusively σE-dependent promoter was detected. We defined the consensus sequences of exclusively σΗ-regulated promotors to be -35 GGAAt and - 10 GTT and σΗ/σE-regulated promoters to be -35 GGAAC and - 10 cGTT. Fifteen genes were found to belong to the σΗ/σΕ regulon. Homology modeling showed that there is a specific interaction between Met170 in σΗ and the nucleotides -31 and - 30 within the non-coding strand (AT or CT) of the σΗ-dependent promoters. In σE, Arg185 was found to interact with the nucleotides GA at the same positions in the σE-dependent promoters.
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Affiliation(s)
- Tobias Busche
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
- Medical School East Westphalia-Lippe, Bielefeld University, Bielefeld, Germany
| | - Hana Dostálová
- Institute of Microbiology, Academy of Sciences of the Czech Republic (ASCR), Prague, Czechia
| | - Lenka Rucká
- Institute of Microbiology, Academy of Sciences of the Czech Republic (ASCR), Prague, Czechia
| | - Jiří Holátko
- Institute of Microbiology, Academy of Sciences of the Czech Republic (ASCR), Prague, Czechia
| | - Ivan Barvík
- Faculty of Mathematics and Physics, Institute of Physics, Charles University, Prague, Czechia
| | - Václav Štěpánek
- Institute of Microbiology, Academy of Sciences of the Czech Republic (ASCR), Prague, Czechia
| | - Miroslav Pátek
- Institute of Microbiology, Academy of Sciences of the Czech Republic (ASCR), Prague, Czechia
| | - Jörn Kalinowski
- Microbial Genomics and Biotechnology, Center for Biotechnology, Bielefeld University, Bielefeld, Germany
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6
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Kranz A, Polen T, Kotulla C, Arndt A, Bosco G, Bussmann M, Chattopadhyay A, Cramer A, Davoudi CF, Degner U, Diesveld R, Freiherr von Boeselager R, Gärtner K, Gätgens C, Georgi T, Geraths C, Haas S, Heyer A, Hünnefeld M, Ishige T, Kabus A, Kallscheuer N, Kever L, Klaffl S, Kleine B, Kočan M, Koch-Koerfges A, Kraxner KJ, Krug A, Krüger A, Küberl A, Labib M, Lange C, Mack C, Maeda T, Mahr R, Majda S, Michel A, Morosov X, Müller O, Nanda AM, Nickel J, Pahlke J, Pfeifer E, Platzen L, Ramp P, Rittmann D, Schaffer S, Scheele S, Spelberg S, Schulte J, Schweitzer JE, Sindelar G, Sorger-Herrmann U, Spelberg M, Stansen C, Tharmasothirajan A, Ooyen JV, van Summeren-Wesenhagen P, Vogt M, Witthoff S, Zhu L, Eikmanns BJ, Oldiges M, Schaumann G, Baumgart M, Brocker M, Eggeling L, Freudl R, Frunzke J, Marienhagen J, Wendisch VF, Bott M. A manually curated compendium of expression profiles for the microbial cell factory Corynebacterium glutamicum. Sci Data 2022; 9:594. [PMID: 36182956 PMCID: PMC9526701 DOI: 10.1038/s41597-022-01706-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 08/18/2022] [Indexed: 11/12/2022] Open
Abstract
Corynebacterium glutamicum is the major host for the industrial production of amino acids and has become one of the best studied model organisms in microbial biotechnology. Rational strain construction has led to an improvement of producer strains and to a variety of novel producer strains with a broad substrate and product spectrum. A key factor for the success of these approaches is detailed knowledge of transcriptional regulation in C. glutamicum. Here, we present a large compendium of 927 manually curated microarray-based transcriptional profiles for wild-type and engineered strains detecting genome-wide expression changes of the 3,047 annotated genes in response to various environmental conditions or in response to genetic modifications. The replicates within the 927 experiments were combined to 304 microarray sets ordered into six categories that were used for differential gene expression analysis. Hierarchical clustering confirmed that no outliers were present in the sets. The compendium provides a valuable resource for future fundamental and applied research with C. glutamicum and contributes to a systemic understanding of this microbial cell factory. Measurement(s) Gene Expression Analysis Technology Type(s) Two Color Microarray Factor Type(s) WT condition A vs. WT condition B • Plasmid-based gene overexpression in parental strain vs. parental strain with empty vector control • Deletion mutant vs. parental strain Sample Characteristic - Organism Corynebacterium glutamicum Sample Characteristic - Environment laboratory environment Sample Characteristic - Location Germany.
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Affiliation(s)
- Angela Kranz
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany.
- IBG-4: Bioinformatics, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany.
| | - Tino Polen
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Christian Kotulla
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Annette Arndt
- Institute of Microbiology and Biotechnology, University of Ulm, D-89069, Ulm, Germany
| | - Graziella Bosco
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Michael Bussmann
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Ava Chattopadhyay
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Annette Cramer
- Institute of Microbiology and Biotechnology, University of Ulm, D-89069, Ulm, Germany
| | - Cedric-Farhad Davoudi
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Ursula Degner
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Ramon Diesveld
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | | | - Kim Gärtner
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Cornelia Gätgens
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Tobias Georgi
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Christian Geraths
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Sabine Haas
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Antonia Heyer
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Max Hünnefeld
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Takeru Ishige
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Armin Kabus
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Nicolai Kallscheuer
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Larissa Kever
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Simon Klaffl
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Britta Kleine
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Martina Kočan
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Abigail Koch-Koerfges
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Kim J Kraxner
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Andreas Krug
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Aileen Krüger
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Andreas Küberl
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Mohamed Labib
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Christian Lange
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Christina Mack
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Tomoya Maeda
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Regina Mahr
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Stephan Majda
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Andrea Michel
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Xenia Morosov
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Olga Müller
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Arun M Nanda
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Jens Nickel
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Jennifer Pahlke
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Eugen Pfeifer
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Laura Platzen
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Paul Ramp
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Doris Rittmann
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Steffen Schaffer
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Sandra Scheele
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Stephanie Spelberg
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Julia Schulte
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Jens-Eric Schweitzer
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Georg Sindelar
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Ulrike Sorger-Herrmann
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Markus Spelberg
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Corinna Stansen
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Apilaasha Tharmasothirajan
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Jan van Ooyen
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | | | - Michael Vogt
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Sabrina Witthoff
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Lingfeng Zhu
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Bernhard J Eikmanns
- Institute of Microbiology and Biotechnology, University of Ulm, D-89069, Ulm, Germany
| | - Marco Oldiges
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Georg Schaumann
- SenseUp GmbH, c/o Campus Forschungszentrum, Wilhelm-Johnen-Strasse, D-52425, Jülich, Germany
| | - Meike Baumgart
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Melanie Brocker
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Lothar Eggeling
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Roland Freudl
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Julia Frunzke
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Jan Marienhagen
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany
| | - Volker F Wendisch
- Genetics of Prokaryotes, Biology & CeBiTec, Bielefeld University, Universitaetsstr. 25, D-33615, Bielefeld, Germany
| | - Michael Bott
- IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich, D-52425, Jülich, Germany.
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7
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Current advances in the classification, production, properties and applications of microbial biosurfactants – A critical review. Adv Colloid Interface Sci 2022; 306:102718. [DOI: 10.1016/j.cis.2022.102718] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 06/07/2022] [Accepted: 06/07/2022] [Indexed: 11/21/2022]
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8
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de Sousa-d'Auria C, Constantinesco F, Bayan N, Constant P, Tropis M, Daffé M, Graille M, Houssin C. Cg1246, a new player in mycolic acid biosynthesis in Corynebacterium glutamicum. MICROBIOLOGY (READING, ENGLAND) 2022; 168. [PMID: 35394419 DOI: 10.1099/mic.0.001171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Mycolic acids are key components of the complex cell envelope of Corynebacteriales. These fatty acids, conjugated to trehalose or to arabinogalactan form the backbone of the mycomembrane. While mycolic acids are essential to the survival of some species, such as Mycobacterium tuberculosis, their absence is not lethal for Corynebacterium glutamicum, which has been extensively used as a model to depict their biosynthesis. Mycolic acids are first synthesized on the cytoplasmic side of the inner membrane and transferred onto trehalose to give trehalose monomycolate (TMM). TMM is subsequently transported to the periplasm by dedicated transporters and used by mycoloyltransferase enzymes to synthesize all the other mycolate-containing compounds. Using a random transposition mutagenesis, we recently identified a new uncharacterized protein (Cg1246) involved in mycolic acid metabolism. Cg1246 belongs to the DUF402 protein family that contains some previously characterized nucleoside phosphatases. In this study, we performed a functional and structural characterization of Cg1246. We showed that absence of the protein led to a significant reduction in the pool of TMM in C. glutamicum, resulting in a decrease in all other mycolate-containing compounds. We found that, in vitro, Cg1246 has phosphatase activity on organic pyrophosphate substrates but is most likely not a nucleoside phosphatase. Using a computational approach, we identified important residues for phosphatase activity and constructed the corresponding variants in C. glutamicum. Surprisingly complementation with these non-functional proteins fully restored the defect in TMM of the Δcg1246 mutant strain, suggesting that in vivo, the phosphatase activity is not involved in mycolic acid biosynthesis.
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Affiliation(s)
- Célia de Sousa-d'Auria
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Florence Constantinesco
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Nicolas Bayan
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Patricia Constant
- Institut de Pharmacologie et de Biologie Structurale, IPBS, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Maryelle Tropis
- Institut de Pharmacologie et de Biologie Structurale, IPBS, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Mamadou Daffé
- Institut de Pharmacologie et de Biologie Structurale, IPBS, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Marc Graille
- Laboratoire de Biologie Structurale de la Cellule (BIOC), CNRS, Ecole polytechnique, IP Paris, F-91128 Palaiseau Cedex, Paris, France
| | - Christine Houssin
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
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9
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Luenenschloss A, Ter Veld F, Albaum SP, Neddermann TM, Wendisch VF, Poetsch A. Functional Genomics Uncovers Pleiotropic Role of Rhomboids in Corynebacterium glutamicum. Front Microbiol 2022; 13:771968. [PMID: 35265054 PMCID: PMC8899591 DOI: 10.3389/fmicb.2022.771968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 01/17/2022] [Indexed: 11/14/2022] Open
Abstract
The physiological role of ubiquitous rhomboid proteases, membrane-integral proteins that cleave their substrates inside the lipid bilayer, is still ill-defined in many prokaryotes. The two rhomboid genes cg0049 and cg2767 of Corynebacterium glutamicum were mutated and it was the aim of this study to investigate consequences in respect to growth phenotype, stress resistance, transcriptome, proteome, and lipidome composition. Albeit increased amount of Cg2767 upon heat stress, its absence did not change the growth behavior of C. glutamicum during exponential and stationary phase. Quantitative shotgun mass spectrometry was used to compare the rhomboid mutant with wild type strain and revealed that proteins covering diverse cellular functions were differentially abundant with more proteins affected in the stationary than in the exponential growth phase. An observation common to both growth phases was a decrease in ribosomal subunits and RNA polymerase, differences in iron uptake proteins, and abundance changes in lipid and mycolic acid biosynthesis enzymes that suggested a functional link of rhomboids to cell envelope lipid biosynthesis. The latter was substantiated by shotgun lipidomics in the stationary growth phase, where in a strain-dependent manner phosphatidylglycerol, phosphatidic acid, diacylglycerol and phosphatidylinositol increased irrespective of cultivation temperature.
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Affiliation(s)
| | - Frank Ter Veld
- Plant Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Stefan P Albaum
- Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Tobias M Neddermann
- Center for Biotechnology, Bielefeld University, Bielefeld, Germany.,Faculty of Biology, Bielefeld University, Bielefeld, Germany
| | - Volker F Wendisch
- Center for Biotechnology, Bielefeld University, Bielefeld, Germany.,Faculty of Biology, Bielefeld University, Bielefeld, Germany
| | - Ansgar Poetsch
- Plant Biochemistry, Ruhr University Bochum, Bochum, Germany.,Department of Marine Biology, Ocean University of China, Qingdao, China.,Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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10
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Blumenstein J, Rädisch R, Štěpánek V, Grulich M, Dostálová H, Pátek M. Identification of Rhodococcus erythropolis Promoters Controlled by Alternative Sigma Factors Using In Vivo and In Vitro Systems and Heterologous RNA Polymerase. Curr Microbiol 2022; 79:55. [PMID: 34982253 DOI: 10.1007/s00284-021-02747-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 12/10/2021] [Indexed: 11/03/2022]
Abstract
Rhodococcus erythropolis CCM2595 is a bacterial strain, which has been studied for its capability to degrade phenol and other toxic aromatic compounds. Its cell wall contains mycolic acids, which are also an attribute of other bacteria of the Mycolata group, such as Corynebacterium and Mycobacterium species. We suppose that many genes upregulated by phenol stress in R. erythropolis are controlled by the alternative sigma factors of RNA polymerase, which are active in response to the cell envelope or oxidative stress. We developed in vitro and in vivo assays to examine the connection between the stress sigma factors and genes activated by various extreme conditions, e.g., heat, cell surface, and oxidative stress. These assays are based on the procedures of such tests carried out in the related species, Corynebacterium glutamicum. We showed that the R. erythropolis CCM2595 genes frmB1 and frmB2, which encode S-formylglutathione hydrolases (named corynomycolyl transferases in C. glutamicum), are controlled by SigD, just like the homologous genes cmt1 and cmt2 in C. glutamicum. The new protocol of the in vivo and in vitro assays will enable us to classify R. erythropolis promoters according to their connection to sigma factors and to assign the genes to the corresponding sigma regulons. The complex stress responses, such as that induced by phenol, could, thus, be analyzed with respect to the gene regulation by sigma factors.
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Affiliation(s)
- Jan Blumenstein
- Institute of Microbiology of the CAS, v.v.i., Prague, Czech Republic.,Department of Genetics and Microbiology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Robert Rädisch
- Institute of Microbiology of the CAS, v.v.i., Prague, Czech Republic.,Department of Genetics and Microbiology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Václav Štěpánek
- Institute of Microbiology of the CAS, v.v.i., Prague, Czech Republic
| | - Michal Grulich
- Institute of Microbiology of the CAS, v.v.i., Prague, Czech Republic
| | - Hana Dostálová
- Institute of Microbiology of the CAS, v.v.i., Prague, Czech Republic
| | - Miroslav Pátek
- Institute of Microbiology of the CAS, v.v.i., Prague, Czech Republic.
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11
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Li H, Xu D, Liu Y, Tan X, Qiao J, Li Z, Qi B, Hu X, Wang X. Preventing mycolic acid reduction in Corynebacterium glutamicum can efficiently increase L-glutamate production. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2021.108255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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12
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Jeon EJ, Choi JW, Cho MS, Jeong KJ. Enhanced production of neoagarobiose from agar with Corynebacterium glutamicum producing exo-type and endo-type β-agarases. Microb Biotechnol 2021; 14:2164-2175. [PMID: 34310855 PMCID: PMC8449658 DOI: 10.1111/1751-7915.13899] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 07/11/2021] [Accepted: 07/11/2021] [Indexed: 11/30/2022] Open
Abstract
Neoagarobiose (NA2) derived from agar marine biomass is a rare reagent that acts as an anti-melanogenesis reagent and moisturizer. Here, for the economical manufacturing of NA2, we developed the co-secretory production system of endo-type β-agarases (DagA) and exo-type β-agarases (EXB3) in Corynebacterium glutamicum. For this purpose, we first developed a secretory system of DagA via Tat pathway. To improve the secretion efficiency, we coexpressed two Tat pathway components (TatA and TatC), and to improve the purity of secreted DagA in the culture supernatant, two endogenous protein genes (Cg2052 and Cg1514) were removed. Using the engineered strain (C. glutamicum SP002), we confirmed that DagA as high as 1.53 g l-1 was successfully produced in the culture media with high purity (72.7% in the supernatant protein fraction). Next, we constructed the expression system (pHCP-CgR-DagA-EXB3) for the simultaneous secretion of EXB3 via Sec-pathway together with DagA, and it was clearly confirmed that DagA and EXB3 were successfully secreted as high as 54% and 24.5%, respectively. Finally, using culture medium containing DagA and EXB3, we successfully demonstrated the conversion of high-concentration agar (40 g l-1 ) into NA2 via a two-stage hydrolysis process.
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Affiliation(s)
- Eun Jung Jeon
- Department of Chemical and Biomolecular Engineering (BK Plus Program), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
| | - Jae Woong Choi
- Research Group of Traditional Food, Korea Food Research Institute, Wanju-gun, Jeollabuk-do, 55365, Korea
| | - Min Soo Cho
- Department of Chemical and Biomolecular Engineering (BK Plus Program), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
| | - Ki Jun Jeong
- Department of Chemical and Biomolecular Engineering (BK Plus Program), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea.,Korea Advanced Institute of Science and Technology (KAIST), Institute for the BioCentury, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea
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13
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Möller J, Nosratabadi F, Musella L, Hofmann J, Burkovski A. Corynebacterium diphtheriae Proteome Adaptation to Cell Culture Medium and Serum. Proteomes 2021; 9:proteomes9010014. [PMID: 33805816 PMCID: PMC8005964 DOI: 10.3390/proteomes9010014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/09/2021] [Accepted: 03/10/2021] [Indexed: 12/03/2022] Open
Abstract
Host-pathogen interactions are often studied in vitro using primary or immortal cell lines. This set-up avoids ethical problems of animal testing and has the additional advantage of lower costs. However, the influence of cell culture media on bacterial growth and metabolism is not considered or investigated in most cases. To address this question growth and proteome adaptation of Corynebacterium diphtheriae strain ISS3319 were investigated in this study. Bacteria were cultured in standard growth medium, cell culture medium, and fetal calf serum. Mass spectrometric analyses and label-free protein quantification hint at an increased bacterial pathogenicity when grown in cell culture medium as well as an influence of the growth medium on the cell envelope.
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Affiliation(s)
- Jens Möller
- Microbiology Division, Department of Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany; (F.N.); (L.M.); (A.B.)
- Correspondence: ; Tel.: +49-9131-85-28802
| | - Fatemeh Nosratabadi
- Microbiology Division, Department of Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany; (F.N.); (L.M.); (A.B.)
| | - Luca Musella
- Microbiology Division, Department of Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany; (F.N.); (L.M.); (A.B.)
| | - Jörg Hofmann
- Biochemistry Division, Department of Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany;
| | - Andreas Burkovski
- Microbiology Division, Department of Biology, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany; (F.N.); (L.M.); (A.B.)
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14
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Parise D, Teixeira Dornelles Parise M, Pinto Gomide AC, Figueira Aburjaile F, Bentes Kato R, Salgado-Albarrán M, Tauch A, Ariston de Carvalho Azevedo V, Baumbach J. The Transcriptional Regulatory Network of Corynebacterium pseudotuberculosis. Microorganisms 2021; 9:microorganisms9020415. [PMID: 33671149 PMCID: PMC7923171 DOI: 10.3390/microorganisms9020415] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 02/11/2021] [Accepted: 02/14/2021] [Indexed: 12/26/2022] Open
Abstract
Corynebacterium pseudotuberculosis is a Gram-positive, facultative intracellular, pathogenic bacterium that infects several different hosts, yielding serious economic losses in livestock farming. It causes several diseases including oedematous skin disease (OSD) in buffaloes, ulcerative lymphangitis (UL) in horses, and caseous lymphadenitis (CLA) in sheep, goats and humans. Despite its economic and medical-veterinary importance, our understanding concerning this organism’s transcriptional regulatory mechanisms is still limited. Here, we review the state of the art knowledge on transcriptional regulatory mechanisms of this pathogenic species, covering regulatory interactions mediated by two-component systems, transcription factors and sigma factors. Key transcriptional regulatory players involved in virulence and pathogenicity of C. pseudotuberculosis, such as the PhoPR system and DtxR, are in the focus of this review, as these regulators are promising targets for future vaccine design and drug development. We conclude that more experimental studies are needed to further understand the regulatory repertoire of this important zoonotic pathogen, and that regulators are promising targets for future vaccine design and drug development.
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Affiliation(s)
- Doglas Parise
- Chair of Experimental Bioinformatics, TUM School of Life Sciences, Technical University of Munich, 85354 Freising-Weihenstephan, Germany; (M.T.D.P.); (M.S.-A.); (J.B.)
- Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil; (A.C.P.G.); (R.B.K.); (V.A.d.C.A.)
- Correspondence: or
| | - Mariana Teixeira Dornelles Parise
- Chair of Experimental Bioinformatics, TUM School of Life Sciences, Technical University of Munich, 85354 Freising-Weihenstephan, Germany; (M.T.D.P.); (M.S.-A.); (J.B.)
- Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil; (A.C.P.G.); (R.B.K.); (V.A.d.C.A.)
| | - Anne Cybelle Pinto Gomide
- Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil; (A.C.P.G.); (R.B.K.); (V.A.d.C.A.)
| | | | - Rodrigo Bentes Kato
- Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil; (A.C.P.G.); (R.B.K.); (V.A.d.C.A.)
| | - Marisol Salgado-Albarrán
- Chair of Experimental Bioinformatics, TUM School of Life Sciences, Technical University of Munich, 85354 Freising-Weihenstephan, Germany; (M.T.D.P.); (M.S.-A.); (J.B.)
- Departamento de Ciencias Naturales, Universidad Autónoma Metropolitana Cuajimalpa, Mexico City 05348, Mexico
| | - Andreas Tauch
- Center for Biotechnology (CeBiTec), Bielefeld University, 33615 Bielefeld, Germany;
| | - Vasco Ariston de Carvalho Azevedo
- Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil; (A.C.P.G.); (R.B.K.); (V.A.d.C.A.)
| | - Jan Baumbach
- Chair of Experimental Bioinformatics, TUM School of Life Sciences, Technical University of Munich, 85354 Freising-Weihenstephan, Germany; (M.T.D.P.); (M.S.-A.); (J.B.)
- Computational BioMedicine lab, Institute of Mathematics and Computer Science, University of Southern Denmark, 5230 Odense, Denmark
- Chair of Computational Systems Biology, University of Hamburg, 22607 Hamburg, Germany
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15
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Henke NA, Krahn I, Wendisch VF. Improved Plasmid-Based Inducible and Constitutive Gene Expression in Corynebacterium glutamicum. Microorganisms 2021; 9:204. [PMID: 33478126 PMCID: PMC7835838 DOI: 10.3390/microorganisms9010204] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 01/15/2021] [Accepted: 01/18/2021] [Indexed: 01/18/2023] Open
Abstract
Corynebacterium glutamicum has been safely used in white biotechnology for the last 60 years and the portfolio of new pathways and products is increasing rapidly. Hence, expression vectors play a central role in discovering endogenous gene functions and in establishing heterologous gene expression. In this work, new expression vectors were designed based on two strategies: (i) a library screening of constitutive native and synthetic promoters and (ii) an increase of the plasmid copy number. Both strategies were combined and resulted in a very strong expression and overproduction of the fluorescence protein GfpUV. As a second test case, the improved vector for constitutive expression was used to overexpress the endogenous xylulokinase gene xylB in a synthetic operon with xylose isomerase gene xylA from Xanthomonas campestris. The xylose isomerase activity in crude extracts was increased by about three-fold as compared to that of the parental vector. In terms of application, the improved vector for constitutive xylA and xylB expression was used for production of the N-methylated amino acid sarcosine from monomethylamine, acetate, and xylose. As a consequence, the volumetric productivity of sarcosine production was 50% higher as compared to that of the strain carrying the parental vector.
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Affiliation(s)
| | | | - Volker F. Wendisch
- Genetics of Prokaryotes, Faculty of Biology & CeBiTec, Bielefeld University, 33615 Bielefeld, Germany; (N.A.H.); (I.K.)
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16
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Genome-wide identification of novel genes involved in Corynebacteriales cell envelope biogenesis using Corynebacterium glutamicum as a model. PLoS One 2021; 15:e0240497. [PMID: 33383576 PMCID: PMC7775120 DOI: 10.1371/journal.pone.0240497] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 12/16/2020] [Indexed: 01/06/2023] Open
Abstract
Corynebacteriales are Actinobacteria that possess an atypical didermic cell envelope. One of the principal features of this cell envelope is the presence of a large complex made up of peptidoglycan, arabinogalactan and mycolic acids. This covalent complex constitutes the backbone of the cell wall and supports an outer membrane, called mycomembrane in reference to the mycolic acids that are its major component. The biosynthesis of the cell envelope of Corynebacteriales has been extensively studied, in particular because it is crucial for the survival of important pathogens such as Mycobacterium tuberculosis and is therefore a key target for anti-tuberculosis drugs. In this study, we explore the biogenesis of the cell envelope of Corynebacterium glutamicum, a non-pathogenic Corynebacteriales, which can tolerate dramatic modifications of its cell envelope as important as the loss of its mycomembrane. For this purpose, we used a genetic approach based on genome-wide transposon mutagenesis. We developed a highly effective immunological test based on the use of anti-cell wall antibodies that allowed us to rapidly identify bacteria exhibiting an altered cell envelope. A very large number (10,073) of insertional mutants were screened by means of this test, and 80 were finally selected, representing 55 different loci. Bioinformatics analyses of these loci showed that approximately 60% corresponded to genes already characterized, 63% of which are known to be directly involved in cell wall processes, and more specifically in the biosynthesis of the mycoloyl-arabinogalactan-peptidoglycan complex. We identified 22 new loci potentially involved in cell envelope biogenesis, 76% of which encode putative cell envelope proteins. A mutant of particular interest was further characterized and revealed a new player in mycolic acid metabolism. Because a large proportion of the genes identified by our study is conserved in Corynebacteriales, the library described here provides a new resource of genes whose characterization could lead to a better understanding of the biosynthesis of the envelope components of these bacteria.
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17
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Wang Y, Hu L, Huang H, Wang H, Zhang T, Chen J, Du G, Kang Z. Eliminating the capsule-like layer to promote glucose uptake for hyaluronan production by engineered Corynebacterium glutamicum. Nat Commun 2020; 11:3120. [PMID: 32561727 PMCID: PMC7305114 DOI: 10.1038/s41467-020-16962-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 06/01/2020] [Indexed: 02/06/2023] Open
Abstract
Hyaluronan is widely used in cosmetics and pharmaceutics. Development of robust and safe cell factories and cultivation approaches to efficiently produce hyaluronan is of many interests. Here, we describe the metabolic engineering of Corynebacterium glutamicum and application of a fermentation strategy to manufacture hyaluronan with different molecular weights. C. glutamicum is engineered by combinatorial overexpression of type I hyaluronan synthase, enzymes of intermediate metabolic pathways and attenuation of extracellular polysaccharide biosynthesis. The engineered strain produces 34.2 g L−1 hyaluronan in fed-batch cultures. We find secreted hyaluronan encapsulates C. glutamicum, changes its cell morphology and inhibits metabolism. Disruption of the encapsulation with leech hyaluronidase restores metabolism and leads to hyper hyaluronan productions of 74.1 g L−1. Meanwhile, the molecular weight of hyaluronan is also highly tunable. These results demonstrate combinatorial optimization of cell factories and the extracellular environment is efficacious and likely applicable for the production of other biopolymers. Bioproduction of hyaluronan needs increases in yield and greater diversity of the molecular weights. Here, the author increases hyaluronan production and diversifies the molecular weights through engineering the hyaluronan biosynthesis pathway and disruption of Corynebacterium glutamicum encapsulation caused by secreted hyaluronan.
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Affiliation(s)
- Yang Wang
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, 214122, Wuxi, China.,The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122, Wuxi, China
| | - Litao Hu
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, 214122, Wuxi, China.,The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122, Wuxi, China
| | - Hao Huang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122, Wuxi, China
| | - Hao Wang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122, Wuxi, China
| | | | - Jian Chen
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, 214122, Wuxi, China.,The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122, Wuxi, China
| | - Guocheng Du
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, 214122, Wuxi, China.,The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122, Wuxi, China
| | - Zhen Kang
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, 214122, Wuxi, China. .,The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122, Wuxi, China.
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Dostálová H, Busche T, Holátko J, Rucká L, Štěpánek V, Barvík I, Nešvera J, Kalinowski J, Pátek M. Overlap of Promoter Recognition Specificity of Stress Response Sigma Factors SigD and SigH in Corynebacterium glutamicum ATCC 13032. Front Microbiol 2019; 9:3287. [PMID: 30687273 PMCID: PMC6338062 DOI: 10.3389/fmicb.2018.03287] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 12/17/2018] [Indexed: 12/27/2022] Open
Abstract
Corynebacterium glutamicum ATCC 13032 harbors five sigma subunits of RNA polymerase belonging to Group IV, also called extracytoplasmic function (ECF) σ factors. These factors σC, σD, σE, σH, and σM are mostly involved in stress responses. The role of σD consists in the control of cell wall integrity. The σD regulon is involved in the synthesis of components of the mycomembrane which is part of the cell wall in C. glutamicum. RNA sequencing of the transcriptome from a strain overexpressing the sigD gene provided 29 potential σD-controlled genes and enabled us to precisely localize their transcriptional start sites. Analysis of the respective promoters by both in vitro transcription and the in vivo two-plasmid assay confirmed that transcription of 11 of the tested genes is directly σD-dependent. The key sequence elements of all these promoters were found to be identical or closely similar to the motifs -35 GTAACA/G and -10 GAT. Surprisingly, nearly all of these σD-dependent promoters were also active to a much lower extent with σHin vivo and one (Pcg0607) also in vitro, although the known highly conserved consensus sequence of the σH-dependent promoters is different (-35 GGAAT/C and -10 GTT). In addition to the activity of σH at the σD-controlled promoters, we discovered separated or overlapping σA- or σB-regulated or σH-regulated promoters within the upstream region of 8 genes of the σD-regulon. We found that phenol in the cultivation medium acts as a stress factor inducing expression of some σD-dependent genes. Computer modeling revealed that σH binds to the promoter DNA in a similar manner as σD to the analogous promoter elements. The homology models together with mutational analysis showed that the key amino acids, Ala 60 in σD and Lys 53 in σH, bind to the second nucleotide within the respective -10 promoter elements (GAT and GTT, respectively). The presented data obtained by integrating in vivo, in vitro and in silico approaches demonstrate that most of the σD-controlled genes also belong to the σH-regulon and are also transcribed from the overlapping or closely located housekeeping (σA-regulated) and/or general stress (σB-regulated) promoters.
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Affiliation(s)
- Hana Dostálová
- Institute of Microbiology of the CAS, v. v. i., Prague, Czechia
| | - Tobias Busche
- Centrum für Biotechnologie, Universität Bielefeld, Bielefeld, Germany
| | - Jiří Holátko
- Institute of Microbiology of the CAS, v. v. i., Prague, Czechia
| | - Lenka Rucká
- Institute of Microbiology of the CAS, v. v. i., Prague, Czechia
| | - Václav Štěpánek
- Institute of Microbiology of the CAS, v. v. i., Prague, Czechia
| | - Ivan Barvík
- Institute of Physics, Faculty of Mathematics and Physics, Charles University, Prague, Czechia
| | - Jan Nešvera
- Institute of Microbiology of the CAS, v. v. i., Prague, Czechia
| | - Jörn Kalinowski
- Centrum für Biotechnologie, Universität Bielefeld, Bielefeld, Germany
| | - Miroslav Pátek
- Institute of Microbiology of the CAS, v. v. i., Prague, Czechia
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Recent advances in metabolic engineering of Corynebacterium glutamicum for bioproduction of value-added aromatic chemicals and natural products. Appl Microbiol Biotechnol 2018; 102:8685-8705. [DOI: 10.1007/s00253-018-9289-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 07/30/2018] [Accepted: 07/31/2018] [Indexed: 02/06/2023]
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Lange J, Münch E, Müller J, Busche T, Kalinowski J, Takors R, Blombach B. Deciphering the Adaptation of Corynebacterium glutamicum in Transition from Aerobiosis via Microaerobiosis to Anaerobiosis. Genes (Basel) 2018; 9:E297. [PMID: 29899275 PMCID: PMC6027265 DOI: 10.3390/genes9060297] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 05/31/2018] [Accepted: 06/07/2018] [Indexed: 01/02/2023] Open
Abstract
Zero-growth processes are a promising strategy for the production of reduced molecules and depict a steady transition from aerobic to anaerobic conditions. To investigate the adaptation of Corynebacterium glutamicum to altering oxygen availabilities, we conceived a triple-phase fermentation process that describes a gradual reduction of dissolved oxygen with a shift from aerobiosis via microaerobiosis to anaerobiosis. The distinct process phases were clearly bordered by the bacteria’s physiologic response such as reduced growth rate, biomass substrate yield and altered yield of fermentation products. During the process, sequential samples were drawn at six points and analyzed via RNA-sequencing, for metabolite concentrations and for enzyme activities. We found transcriptional alterations of almost 50% (1421 genes) of the entire protein coding genes and observed an upregulation of fermentative pathways, a rearrangement of respiration, and mitigation of the basic cellular mechanisms such as transcription, translation and replication as a transient response related to the installed oxygen dependent process phases. To investigate the regulatory regime, 18 transcriptionally altered (putative) transcriptional regulators were deleted, but none of the deletion strains showed noticeable growth kinetics under an oxygen restricted environment. However, the described transcriptional adaptation of C. glutamicum resolved to varying oxygen availabilities provides a useful basis for future process and strain engineering.
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Affiliation(s)
- Julian Lange
- Institute of Biochemical Engineering, University of Stuttgart, Allmandring 31, 70569 Stuttgart, Germany.
| | - Eugenia Münch
- Institute of Biochemical Engineering, University of Stuttgart, Allmandring 31, 70569 Stuttgart, Germany.
| | - Jan Müller
- Institute of Biochemical Engineering, University of Stuttgart, Allmandring 31, 70569 Stuttgart, Germany.
| | - Tobias Busche
- Center for Biotechnology, Bielefeld University, Universitätsstraße 27, 33615 Bielefeld, Germany.
- Institute for Biology-Microbiology, Freie Universität Berlin, Königin-Luise-Str. 12-16, 14195 Berlin, Germany.
| | - Jörn Kalinowski
- Center for Biotechnology, Bielefeld University, Universitätsstraße 27, 33615 Bielefeld, Germany.
| | - Ralf Takors
- Institute of Biochemical Engineering, University of Stuttgart, Allmandring 31, 70569 Stuttgart, Germany.
| | - Bastian Blombach
- Institute of Biochemical Engineering, University of Stuttgart, Allmandring 31, 70569 Stuttgart, Germany.
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Toyoda K, Inui M. Extracytoplasmic function sigma factor σDconfers resistance to environmental stress by enhancing mycolate synthesis and modifying peptidoglycan structures inCorynebacterium glutamicum. Mol Microbiol 2017; 107:312-329. [DOI: 10.1111/mmi.13883] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/15/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Koichi Toyoda
- Research institute of Innovative Technology for the Earth (RITE), 9-2 Kizugawa; Kyoto 619-0292 Japan
| | - Masayuki Inui
- Research institute of Innovative Technology for the Earth (RITE), 9-2 Kizugawa; Kyoto 619-0292 Japan
- Graduate School of Biological Sciences; Nara Institute of Science and Technology, 8916-5; Takayama, Ikoma, Nara 630-0101 Japan
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