title: Oscillating behavior of Clostridium difficile Min proteins in Bacillus subtilis.
abstract: In rod-shaped bacteria, the proper placement of the division septum at the midcell relies, at least partially, on the proteins of the Min system as an inhibitor of cell division. The main principle of Min system function involves the formation of an inhibitor gradient along the cell axis; however, the establishment of this gradient differs between two well-studied gram-negative and gram-positive bacteria. While in gram-negative Escherichia coli, the Min system undergoes pole-to-pole oscillation, in gram-positive Bacillus subtilis, proper spatial inhibition is achieved by the preferential attraction of the Min proteins to the cell poles. Nevertheless, when E.coli Min proteins are inserted into B.subtilis cells, they still oscillate, which negatively affects asymmetric septation during sporulation in this organism. Interestingly, homologs of both Min systems were found to be present in various combinations in the genomes of anaerobic and endospore-forming Clostridia, including the pathogenic Clostridium difficile. Here, we have investigated the localization and behavior of C.difficile Min protein homologs and showed that MinDE proteins of C.difficile can oscillate when expressed together in B.subtilis cells. We have also investigated the effects of this oscillation on B.subtilis sporulation, and observed decreased sporulation efficiency in strains harboring the MinDE genes. Additionally, we have evaluated the effects of C.difficile Min protein expression on vegetative division in this heterologous host.
authors.affiliation: Institute of Molecular Biology, Slovak Academy of Sciences, Bratislava, Slovakia.
authors.forename: Jana
authors.initials: J
authors.lastname: Makroczyová
authors.affiliation: Institute of Molecular Biology, Slovak Academy of Sciences, Bratislava, Slovakia.
authors.forename: Ján
authors.initials: J
authors.lastname: Jamroškovič
authors.affiliation: Institute of Molecular Biology, Slovak Academy of Sciences, Bratislava, Slovakia.
authors.forename: Eva
authors.initials: E
authors.lastname: Krascsenitsová
authors.affiliation: Institute of Molecular Biology, Slovak Academy of Sciences, Bratislava, Slovakia.
authors.forename: Nad'a
authors.initials: N
authors.lastname: Labajová
authors.affiliation: Institute of Molecular Biology, Slovak Academy of Sciences, Bratislava, Slovakia.
authors.forename: Imrich
authors.initials: I
authors.lastname: Barák
mesh_terms: D001412:Bacillus subtilis / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism*; D001426:Bacterial Proteins / Q000378:metabolism; D002455:Cell Division / Q000235:genetics / Q000502:physiology*; D016360:Clostridioides difficile / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism*; D003598:Cytoskeletal Proteins / Q000378:metabolism; D004926:Escherichia coli / Q000254:growth & development; D013171:Spores, Bacterial / Q000254:growth & development*
chemical_list: D001426:Bacterial Proteins; D003598:Cytoskeletal Proteins; C071525:FtsZ protein, Bacteria
keywords: Bacillus subtilis; Clostridium difficile; Min system oscillation; bacterial cell division; sporulation
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