TY - GEN A1 - Commichau, Fabian M. T1 - Hochvirulente Isolate des pathogenen Bakteriums Listeria monocytogenes T2 - BioSpektrum N2 - Das Gram-positive Bakterium Listeria monocytogenes kommt sowohl freilebend als auch als Pathogen in verschiedenen Wirbeltiertaxa sowie in Crustaceen vor. Gelangt L. monocytogenes über die Nah- rung in den menschlichen Körper, kann es Listeriose auslösen. Diese bakterielle Infektion ist für immunsupprimierte und ältere Menschen sowie für schwangere Frauen besonders gefährlich. Aufgrund unzureichender hygienischer Maßnahmen bei der Lebensmittelzubereitung kam es in der Vergangenheit immer wieder zu Todesfällen. Kürzlich berichteten Yuelan Yin et al. (Nat Commun (2019) 10:4283) von den virulentesten L. monocytogenes- Isolaten. Y1 - 2020 UR - https://link.springer.com/article/10.1007/s12268-020-1383-5 U6 - https://doi.org/10.1007/s12268-020-1383-5 SN - 1868-6249 SN - 0947-0867 VL - 26 IS - 3 SP - S. 280 ER - TY - GEN A1 - Richts, Björn A1 - Hertel, Robert A1 - Potot, Sébastien A1 - Poehlein, Anja A1 - Daniel, Rolf A1 - Schyns, Ghislain A1 - Prágai, Zoltán A1 - Commichau, Fabian M. T1 - Complete Genome Sequence of the Prototrophic Bacillus subtilis subsp. subtilis Strain SP1 T2 - Microbiology Resource Announcements N2 - Here, we present the complete genome sequence of the Bacillus subtilis strain SP1. This strain is a descendant of the laboratory strain 168. The strain is suit- able for biotechnological applications because the prototrophy for tryptophan has been restored. Due to laboratory cultivation, the strain has acquired 24 additional sequence variations. Y1 - 2020 UR - https://mra.asm.org/content/9/32/e00825-20 U6 - https://doi.org/10.1128/MRA.00825-20 SN - 2576-098X VL - 9 IS - 32 ER - TY - GEN A1 - Lilge, Lars A1 - Hertel, Robert A1 - Morabbi Heravi, Kambiz A1 - Henkel, Marius A1 - Commichau, Fabian M. A1 - Hausmann, Rudolf T1 - Draft Genome Sequence of the Type Strain Bacillus subtilis subsp. subtilis DSM10 T2 - Microbiology Resource Announcements N2 - The Bacillus subtilis subsp. subtilis type strain DSM10 has been used as a reference in various studies. However, detailed information about the genome has not been available. Therefore, whole-genome sequencing was performed, and the sequence was compared with that of the related B. subtilis strain NCIB3610. Y1 - 2021 UR - https://mra.asm.org/content/10/10/e00158-21 U6 - https://doi.org/10.1128/MRA.00158-21 SN - 2576-098X VL - 10 IS - 10 SP - 1 EP - 3 ER - TY - GEN A1 - Commichau, Fabian M. A1 - Lassak, Jürgen T1 - Symposium der VAAM-Fachgruppe Regulation und Signaltransduktion in Prokaryoten: Moonlighting-Proteine und promiskuitive Enzyme T2 - BioSpektrum Y1 - 2020 UR - https://www.biospektrum.de/blatt/d_bs_pdf&_id=1779732 SN - 1868-6249 VL - 26 IS - 6 SP - 661 EP - 662 PB - Springer CY - Heidelberg ER - TY - GEN A1 - Riedel, Ramona A1 - Commichau, Fabian M. A1 - Benndorf, Dirk A1 - Hertel, Robert A1 - Holzer, Katharina A1 - Mardoukhi, Mohammad Saba Yousef A1 - Noack, Laura A1 - Martienssen, Marion T1 - Biodegradation of selected aminophosphonates by the bacterial isolate Ochrobactrum sp. BTU1 T2 - Microbial Research N2 - Aminophosphonates, like glyphosate (GS) or metal chelators such as ethylenediaminetetra(methylenephosphonic acid) (EDTMP), are released on a large scale worldwide. Here, we have characterized a bacterial strain capable of degrading synthetic aminophosphonates. The strain was isolated from LC/MS standard solution. Genome sequencing indicated that the strain belongs to the genus Ochrobactrum. Whole-genome classification using pyANI software to compute a pairwise ANI and other metrics between Brucella assemblies and Ochrobactrum contigs revealed that the bacterial strain is designated as Ochrobactrum sp. BTU1. Degradation batch tests with Ochrobactrum sp. BTU1 and the selected aminophosphonates GS, EDTMP, aminomethylphosphonic acid (AMPA), iminodi(methylene-phosphonic) (IDMP) and ethylaminobis(methylenephosphonic) acid (EABMP) showed that the strain can use all phosphonates as sole phosphorus source during phosphorus starvation. The highest growth rate was achieved with AMPA, while EDTMP and GS were least supportive for growth. Proteome analysis revealed that GS degradation is promoted by C-P lyase via the sarcosine pathway, i.e., initial cleavage at the C-P bond. We also identified C-P lyase to be responsible for degradation of EDTMP, EABMP, IDMP and AMPA. However, the identification of the metabolite ethylenediaminetri(methylenephosphonic acid) via LC/MS analysis in the test medium during EDTMP degradation indicates a different initial cleavage step as compared to GS. For EDTMP, it is evident that the initial cleavage occurs at the C-N bond. The detection of different key enzymes at regulated levels, form the bacterial proteoms during EDTMP exposure, further supports this finding. Y1 - 2024 U6 - https://doi.org/10.1016/j.micres.2024.127600 SN - 0944-5013 VL - 280 SP - 1 EP - 12 ER - TY - GEN A1 - Hertel, Robert A1 - Schöne, Kerstin A1 - Mittelstädt, Carolin A1 - Meißner, Janek A1 - Zschoche, Nick A1 - Collignon, Madeline A1 - Kohler, Christian A1 - Friedrich, Ines A1 - Schneider, Dominik A1 - Hoppert, Michael A1 - Kuhn, Ramona A1 - Schwedt, Inge A1 - Scholz, Patricia A1 - Poehlein, Anja A1 - Martienssen, Marion A1 - Ischebeck, Till A1 - Daniel, Rolf A1 - Commichau, Fabian M. T1 - Characterization of glyphosate-resistant Burkholderia anthina and Burkholderia cenocepacia isolates from a commercial Roundup® solution T2 - Environmental Microbiology Reports N2 - Roundup® is the brand name for herbicide solutions containing glyphosate, which specifically inhibits the 5-enolpyruvyl-shikimate-3-phosphate (EPSP) synthase of the shikimate pathway. The inhibition of the EPSP synthase causes plant death because EPSP is required for biosynthesis of aromatic amino acids. Glyphosate also inhibits the growth of archaea, bacteria, Apicomplexa, algae and fungi possessing an EPSP synthase. Here, we have characterized two glyphosate-resistant bacteria from a Roundup solution. Taxonomic classification revealed that the isolates 1CH1 and 2CH1 are Burkholderia anthina and Burkholderia cenocepacia strains respectively. Both isolates cannot utilize glyphosate as a source of phosphorus and synthesize glyphosate-sensitive EPSP synthase variants. Burkholderia. anthina 1CH1 and B. cenocepacia 2CH1 tolerate high levels of glyphosate because the herbicide is not taken up by the bacteria. Previously, it has been observed that the exposure of soil bacteria to herbicides like glyphosate promotes the development of antibiotic resistances. Antibiotic sensitivity testing revealed that the only the B. cenocepacia 2CH1 isolate showed increased resistance to a variety of antibiotics. Thus, the adaptation of B. anthina 1CH1 and B. cenocepacia 2CH1 to glyphosate did not generally increase the antibiotic resistance of both bacteria. However, our study confirms the genomic adaptability of bacteria belonging to the genus Burkholderia. Y1 - 2022 U6 - https://doi.org/10.1111/1758-2229.13022 SN - 1758-2229 VL - 14 IS - 1 SP - 70 EP - 84 ER - TY - GEN A1 - Wang, Mengyi A1 - Wamp, Sabrina A1 - Gibhardt, Johannes A1 - Holland, Gudrun A1 - Schwedt, Inge A1 - Schmidtke, Kai-Uwe A1 - Scheibner, Katrin A1 - Halbedel, Sven A1 - Commichau, Fabian M. T1 - Adaptation of Listeria monocytogenes to perturbation of c-di-AMP metabolism underpins its role in osmoadaptation and identifies a fosfomycin uptake system T2 - Environmental microbiology N2 - The human pathogen Listeria monocytogenes synthesizes and degrades c-di-AMP using the diadenylate cyclase CdaA and the phosphodiesterases PdeA and PgpH respectively. c-di-AMP is essential because it prevents the uncontrolled uptake of osmolytes. Here, we studied the phenotypes of cdaA, pdeA, pgpH and pdeA pgpH mutants with defects in c-di-AMP metabolism and characterized suppressor mutants restoring their growth defects. The characterization of the pdeA pgpH mutant revealed that the bacteria show growth defects in defined medium, a phenotype that is invariably suppressed by mutations in cdaA. The previously reported growth defect of the cdaA mutant in rich medium is suppressed by mutations that osmotically stabilize the c-di-AMP-free strain. We also found that the cdaA mutant has an increased sensitivity against isoleucine. The isoleucine-dependent growth inhibition of the cdaA mutant is suppressed by codY mutations that likely reduce the DNA-binding activity of encoded CodY variants. Moreover, the characterization of the cdaA suppressor mutants revealed that the Opp oligopeptide transport system is involved in the uptake of the antibiotic fosfomycin. In conclusion, the suppressor analysis corroborates a key function of c-di-AMP in controlling osmolyte homeostasis in L. monocytogenes. KW - Listeria monocytogenes KW - c-di-AMP metabolism Y1 - 2022 UR - https://sfamjournals.onlinelibrary.wiley.com/doi/10.1111/1462-2920.16084?af=R U6 - https://doi.org/10.1111/1462-2920.16084 SN - 1462-2920 VL - 24 IS - 9 SP - 4466 EP - 4488 ER - TY - GEN A1 - Commichau, Fabian M. A1 - Gibhardt, Johannes A1 - Heidemann, Jana A1 - Bremenkamp, Rica A1 - Rosenberg, Jonathan A1 - Seifert, Roland A1 - Kaever, Volkhard A1 - Ficner, Ralf T1 - An extracytoplasmic protein and a moonlighting enzyme modulate synthesis of c-di-AMP in Listeria monocytogenes T2 - Environmental Microbiology N2 - The second messenger cyclic di-AMP (c-di-AMP) is essential for growth of many bacteria because it controls osmolyte homeostasis. c-di-AMP can regulate the synthesis of potassium uptake systems in some bacteria and it also directly inhibits and activates potassium import and export systems, respectively. Therefore, c-di-AMP production and degradation have to be tightly regulated depending on the environmental osmolarity. The Gram-positive pathogen Listeria monocytogenes relies on the membrane-bound diadenylate cyclase CdaA for c-di-AMP production and degrades the nucleotide with two phosphodiesterases. While the enzymes producing and degrading the dinucleotide have been reasonably well examined, the regulation of c-di-AMP production is not well understood yet. Here we demonstrate that the extracytoplasmic regulator CdaR interacts with CdaA via its transmembrane helix to modulate c-di-AMP production. Moreover, we show that the phosphoglucosamine mutase GlmM forms a complex with CdaA and inhibits the diadenylate cyclase activity in vitro. We also found that GlmM inhibits c-di-AMP production in L. monocytogenes when the bacteria encounter osmotic stress. Thus, GlmM is the major factor controlling the activity of CdaA in vivo. GlmM can be assigned to the class of moonlighting proteins because it is active in metabolism and adjusts the cellular turgor depending on environmental osmolarity. Y1 - 2020 UR - https://sfamjournals.onlinelibrary.wiley.com/doi/full/10.1111/1462-2920.15008 U6 - https://doi.org/10.1111/1462-2920.15008 SN - 1462-2920 SN - 1462-2912 VL - 22 IS - 7 SP - 2771 EP - 2791 ER - TY - GEN A1 - Hertel, Robert A1 - Gibhardt, Johannes A1 - Martienssen, Marion A1 - Kuhn, Ramona A1 - Commichau, Fabian M. T1 - Molecular mechanisms underlying glyphosate resistance in bacteria T2 - Environmental Microbiology N2 - Glyphosate is a nonselective herbicide that kills weeds and other plants competing with crops. Glyphosate specifically inhibits the 5-enolpyruvyl-shikimate-3-phosphate (EPSP) synthase, thereby depleting the cell of EPSP serving as a precursor for biosynthesis of aromatic amino acids. Glyphosate is considered to be toxicologically safe for animals and humans. Therefore, it became the most-important herbicide in agriculture. However, its intensive application in agriculture is a serious environmental issue because it may negatively affect the biodiversity. A few years after the discovery of the mode of action of glyphosate, it has been observed that bacteria evolve glyphosate resistance by acquiring mutations in the EPSP synthase gene, rendering the encoded enzyme less sensitive to the herbicide. The identification of glyphosate-resistant EPSP synthase variants paved the way for engineering crops tolerating increased amounts of the herbicide. This review intends to summarize the molecular mechanisms underlying glyphosate resistance in bacteria. Bacteria can evolve glyphosate resistance by (i) reducing glyphosate sensitivity or elevating production of the EPSP synthase, by (ii) degrading or (iii) detoxifying glyphosate and by (iv) decreasing the uptake or increasing the export of the herbicide. The variety of glyphosate resistance mechanisms illustrates the adaptability of bacteria to anthropogenic substances due to genomic alterations. Y1 - 2021 U6 - https://doi.org/10.1111/1462-2920.15534 SN - 1462-2920 SN - 1462-2912 VL - 23 IS - 6 SP - 2891 EP - 2905 ER - TY - GEN A1 - Schwedt, Inge A1 - Schöne, Kerstin A1 - Eckert, Maike A1 - Pizzinato, Manon A1 - Winkler, Laura A1 - Knotkova, Barbora A1 - Richts, Björn A1 - Hau, Jann‐Louis A1 - Steuber, Julia A1 - Mireles, Raul A1 - Noda‐Garcia, Lianet A1 - Fritz, Günter A1 - Mittelstädt, Carolin A1 - Hertel, Robert A1 - Commichau, Fabian M. T1 - The low mutational flexibility of the EPSP synthase in Bacillus subtilis is due to a higher demand for shikimate pathway intermediates T2 - Environmental Microbiology N2 - Glyphosate (GS) inhibits the 5-enolpyruvyl-shikimate-3-phosphate (EPSP) synthase that is required for aromatic amino acid, folate and quinone biosynthesis in Bacillus subtilis and Escherichia coli. The inhibition of the EPSP synthase by GS depletes the cell of these metabolites, resulting in cell death. Here, we show that like the laboratory B. subtilis strains also environmental and undomesticated isolates adapt to GS by reducing herbicide uptake. Although B. subtilis possesses a GS-insensitive EPSP synthase, the enzyme is strongly inhibited by GS in the native environment. Moreover, the B. subtilis EPSP synthase mutant was only viable in rich medium containing menaquinone, indicating that the bacteria require a catalytically efficient EPSP synthase under nutrient-poor conditions. The dependency of B. subtilis on the EPSP synthase probably limits its evolvability. In contrast, E. coli rapidly acquires GS resistance by target modification. However, the evolution of a GS-resistant EPSP synthase under non-selective growth conditions indicates that GS resistance causes fitness costs. Therefore, in both model organisms, the proper function of the EPSP synthase is critical for the cellular viability. This study also revealed that the uptake systems for folate precursors, phenylalanine and tyrosine need to be identified and characterized in B. subtilis. Y1 - 2023 U6 - https://doi.org/10.1111/1462-2920.16518 SN - 1462-2912 SN - 1462-2920 VL - 25 IS - 12 SP - 3604 EP - 3622 ER - TY - GEN A1 - Schwedt, Inge A1 - Collignon, Madeline A1 - Mittelstädt, Carolin A1 - Giudici, Florian A1 - Rapp, Johanna A1 - Meißner, Janek A1 - Link, Hannes A1 - Hertel, Robert A1 - Commichau, Fabian M. T1 - Genomic adaptation of Burkholderia anthina to glyphosate uncovers a novel herbicide resistance mechanism T2 - Environmental Microbiology Reports N2 - Glyphosate (GS) specifically inhibits the 5-enolpyruvyl-shikimate-3-phosphate (EPSP) synthase that converts phosphoenolpyruvate (PEP) and shikimate-3-phosphate to EPSP in the shikimate pathway of bacteria and other organisms. The inhibition of the EPSP synthase depletes the cell of the EPSP-derived aromatic amino acids as well as of folate and quinones. A variety of mechanisms (e.g., EPSP synthase modification) has been described that confer GS resistance to bacteria. Here, we show that the Burkholderia anthina strain DSM 16086 quickly evolves GS resistance by the acquisition of mutations in the ppsR gene. ppsR codes for the pyruvate/ortho-Pi dikinase PpsR that physically interacts and regulates the activity of the PEP synthetase PpsA. The mutational inactivation of ppsR causes an increase in the cellular PEP concentration, thereby abolishing the inhibition of the EPSP synthase by GS that competes with PEP for binding to the enzyme. Since the overexpression of the Escherichia coli ppsA gene in Bacillus subtilis and E. coli did not increase GS resistance in these organisms, the mutational inactivation of the ppsR gene resulting in PpsA overactivity is a GS resistance mechanism that is probably unique to B. anthina. Y1 - 2023 U6 - https://doi.org/10.1111/1758-2229.13184 SN - 1758-2229 VL - 15 IS - 6 SP - 727 EP - 739 ER - TY - GEN A1 - Täuber, Sarah A1 - Dormeyer, Miriam A1 - Commichau, Fabian M. A1 - Grünberger, Alexander T1 - Visualisierung von Mutationen auf Einzelzellebene T2 - BioSpektrum N2 - Bacterial mutations have been investigated since many years, but they remain difficult to observe directly in single cells, which limits the analysis of the underlying molecular mechanism. However, for the investigation of mutations at the level of single cells, precise analytical tools are currently developed. This article describes a workflow for visualizing mutations in single cells and lays the foundation for the quantification of bacterial mutation rates in the future. Y1 - 2020 UR - https://www.biospektrum.de/blatt/d_bs_pdf&_id=1745078 U6 - https://doi.org/10.1007/s12268-020-1414-2 SN - 1868-6249 SN - 0947-0867 VL - 26 IS - 4 SP - 388 EP - 390 ER - TY - GEN A1 - Richts, Björn A1 - Commichau, Fabian M. T1 - Underground metabolism facilitates the evolution of novel pathways for vitamin B6 biosynthesis T2 - Applied Microbiology and Biotechnology N2 - The term vitamin B6 is a designation for the vitamers pyridoxal, pyridoxamine, pyridoxine and the respective phosphate esters pyridoxal-5′-phosphate (PLP), pyridoxamine-5′-phosphate and pyridoxine-5′-phosphate. Animals and humans are unable to synthesise vitamin B6. These organisms have to take up vitamin B6 with their diet. Therefore, vitamin B6 is of commercial interest as a food additive and for applications in the pharmaceutical industry. As yet, two naturally occurring routes for de novo synthesis of PLP are known. Both routes have been genetically engineered to obtain bacteria overproducing vitamin B6. Still, major genetic engineering efforts using the existing pathways are required for developing fermentation processes that could outcompete the chemical synthesis of vitamin B6. Recent suppressor screens using mutants of the Gram-negative and Gram-positive model bacteria Escherichia coli and Bacillus subtilis, respectively, carrying mutations in the native pathways or heterologous genes uncovered novel routes for PLP biosynthesis. These pathways consist of promiscuous enzymes and enzymes that are already involved in vitamin B6 biosynthesis. Thus, E. coli and B. subtilis contain multiple promiscuous enzymes causing a so-called underground metabolism allowing the bacteria to bypass disrupted vitamin B6 biosynthetic pathways. The suppressor screens also show the genomic plasticity of the bacteria to suppress a genetic lesion. We discuss the potential of the serendipitous pathways to serve as a starting point for the development of bacteria overproducing vitamin B6. Y1 - 2021 UR - https://link.springer.com/article/10.1007/s00253-021-11199-w U6 - https://doi.org/10.1007/s00253-021-11199-w SN - 1432-0614 SN - 0175-7598 VL - 105 IS - 6 SP - 2297 EP - 2305 ER - TY - CHAP A1 - Rosenberg, Jonathan A1 - Richts, Björn A1 - Commichau, Fabian M. ED - Grunwald, Peter T1 - Fermentative Production of Vitamin B6 T2 - Pharmaceutical Biocatalysis : Drugs, Genetic Diseases, and Epigenetics N2 - Volume 7 of the Jenny Stanford Series on Biocatalysis deals with several different aspects of pharmaceuticals, which include not only various applications of drugs and their metabolism but also natural resources for active pharmaceutical ingredients as well as the removal of pharmaceutical pollution. In detail, novel approaches for developing microbial fermentation processes to produce vitamin B6 using microorganisms are described together with novel routes for vitamin B6 biosynthesis. The other topics discussed are new approaches for producing the successful anticancer drug Taxol from naturally occurring precursors, molecular farming through plant engineering as a cost-effective means to produce therapeutic and prophylactic proteins, and successful screening of potent microorganisms producing L-asparaginase for various chemotherapeutic applications. Furthermore, microbial biotransformations in the production and degradation of fluorinated pharmaceuticals are described. The other chapters inform the reader about the biotransformation of xenobiotics/drugs in living systems, the degradation of pharmaceuticals by white-rot fungi and their ligninolytic enzymes, and the removal of pharmaceutical pollution from municipal sewage using laccase Y1 - 2020 UR - https://www.jennystanford.com/9789814877145/pharmaceutical-biocatalysis/ SN - 978-981-4877-14-5 SN - 978-1-00-304541-0 PB - Jenny Stanford publishing CY - Singapur ER - TY - GEN A1 - Richts, Björn A1 - Lentes, Sabine A1 - Poehlein, Anja A1 - Daniel, Rolf A1 - Commichau, Fabian M. T1 - A Bacillus subtilis ΔpdxT mutant suppresses vitamin B6 limitation by acquiring mutations enhancing pdxS gene dosage and ammonium assimilation T2 - Environmental Microbiology Reports N2 - Pyridoxal‐5’‐phosphate (PLP), the biologically active form of vitamin B6, serves as a cofactor for many enzymes. The Gram‐positive model bacterium Bacillus subtilis synthesizes PLP via the PdxST enzyme complex, consisting of the PdxT glutaminase and the PdxS PLP synthase subunits, respectively. PdxT converts glutamine to glutamate and ammonia of which the latter is channelled to PdxS. At high extracellular ammonium concentrations, the PdxS PLP synthase subunit does not depend on PdxT. Here, we assessed the potential of a B. subtilis ΔpdxT mutant to adapt to PLP limitation at the genome level. The majority of ΔpdxT suppressors had amplified a genomic region containing the pdxS gene. We also identified mutants having acquired as yet undescribed mutations in ammonium assimilation genes, indicating that the overproduction of PdxS and the NrgA ammonium transporter partially relieve vitamin B6 limitation in a ΔpdxT mutant when extracellular ammonium is scarce. Furthermore, we found that PdxS positively affects complex colony formation in B. subtilis. The catalytic mechanism of the PdxS PLP synthase subunit could be the reason for the limited evolution of the enzyme and why we could not identify a PdxS variant producing PLP independently of PdxT at low ammonium concentrations. Y1 - 2021 UR - https://sfamjournals.onlinelibrary.wiley.com/doi/abs/10.1111/1758-2229.12936 U6 - https://doi.org/10.1111/1758-2229.12936 SN - 1758-2229 VL - 13 IS - 2 SP - 218 EP - 233 ER - TY - GEN A1 - Kohm, Katharina A1 - Floccari, Valentina A1 - Lutz, Veronika A1 - Nordmann, Birthe A1 - Mittelstädt, Carolin A1 - Poehlein, Anja A1 - Dragos, Anna A1 - Commichau, Fabian M. A1 - Hertel, Robert T1 - The Bacillus phage SPβ and its relatives: A temperate phage model system reveals new strains, species, prophage integration loci, conserved proteins and lysogeny management components T2 - bioRxiv beta N2 - The Bacillus phage SPβ has been known for about 50 years, but only a few strains are avalible. We isolated four new wild type strains of the SPbeta species. Phage vB_BsuS-Goe14 introduces its prophage into the spoVK locus, previously not observed to be used by SPβ-like phages. We could also reveal the SPβ-like phage genome replication strategy, the genome packaging mode, and the phage genome opening point. We extracted 55 SPβ-like prophages from public Bacillus genomes, thereby discovering three more integration loci and one additional type of integrase. The identified prophages resembled four new species clusters and three species orphans in the genus Spbetavirus. The determined core proteome of all SPβ-like prophages consists of 38 proteins. The integration cassette proved to be not conserved even though present in all strains. It consists of distinct integrases. Analysis of SPβ transcriptomes revealed three conserved genes, yopQ, yopR, and yokI, to be transcribed from a dormant prophage. While yopQ and yokI could be deleted from the prophage without activating the prophage, damaging of yopR led to a clear-plaque phenotype. Under the applied laboratory conditions, the yokI mutant showed an elevated virion release implying the YokI protein being a component of the arbitrium system. Y1 - 2021 UR - https://www.biorxiv.org/content/10.1101/2021.11.22.469490v1 U6 - https://doi.org/10.1101/2021.11.22.469490 ER - TY - GEN A1 - Bremenkamp, Rica A1 - Meißner, Janek A1 - Commichau, Fabian M. T1 - Ein bakterielles System zum Nachweis und Abbau des Totalherbizids Glyphosat T2 - Biologie in unserer Zeit N2 - Jedes Jahr aufs Neue kommen Studenten aus aller Welt zusammen und messen sich im internationalen Wettbewerb iGEM auf dem Gebiet der synthetischen Biologie. Dieses Jahr hat das iGEM‐Team aus Göttingen (Abbildung 1) sich mit dem kontrovers diskutierten Totalherbizid Glyphosat befasst und ein bakterielles System zum Nachweis und Abbau des Herbizids entwickelt. Y1 - 2020 UR - https://onlinelibrary.wiley.com/doi/10.1002/biuz.202070107 U6 - https://doi.org/10.1002/biuz.202070107 SN - 1521-415X SN - 0045-205X VL - 50 IS - 1 SP - 15 EP - 17 ER - TY - GEN A1 - Michalik, Stephan A1 - Reder, Alexander A1 - Richts, Björn A1 - Faßhauer, Patrick A1 - Mäder, Ulrike A1 - Pedreira, Tiago A1 - Poehlein, Anja A1 - Heel, Auke van A1 - Tilburg, Amanda van A1 - Altenbuchner, Josef A1 - Klewing, Anika A1 - Reuß, Daniel A1 - Daniel, Rolf A1 - Commichau, Fabian M. A1 - Kuipers, Oscar A1 - Hamoen, Leendert A1 - Völker, Uwe A1 - Stülke, Jörg T1 - The Bacillus subtilis Minimal Genome Compendium T2 - ACS Synthetic Biology N2 - To better understand cellular life, it is essential to decipher the contribution of individual components and their interactions. Minimal genomes are an important tool to investigate these interactions. Here, we provide a database of 105 fully annotated genomes of a series of strains with sequential deletion steps of the industrially relevant model bacterium Bacillus subtilis starting with the laboratory wild type strain B. subtilis 168 and ending with B. subtilis PG38, which lacks approximately 40% of the original genome. The annotation is supported by sequencing of key intermediate strains as well as integration of literature knowledge for the annotation of the deletion scars and their potential effects. The strain compendium presented here represents a comprehensive genome library of the entire MiniBacillus project. This resource will facilitate the more effective application of the different strains in basic science as well as in biotechnology. Y1 - 2021 UR - https://pubs.acs.org/doi/10.1021/acssynbio.1c00339 U6 - https://doi.org/10.1021/acssynbio.1c00339 SN - 2161-5063 VL - 10 IS - 10 SP - 2767 EP - 2771 ER -