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  • 1
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    RacA, a bacterial protein that anchors chromosomes to the cell poles (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-12-21
    Description: Eukaryotic chromosomes are anchored to a spindle apparatus during mitosis, but no such structure is known during chromosome segregation in bacteria. When sister chromosomes are segregated during sporulation in Bacillus subtilis, the replication origin regions migrate to opposite poles of the cell. If and how origin regions are fastened at the poles has not been determined. Here we describe a developmental protein, RacA, that acts as a bridge between the origin region and the cell poles. We propose that RacA assembles into an adhesive patch at a centromere-like element near the origin, causing chromosomes to stick at the poles.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ben-Yehuda, Sigal -- Rudner, David Z -- Losick, Richard -- GM18568/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2003 Jan 24;299(5606):532-6. Epub 2002 Dec 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12493822" target="_blank"〉PubMed〈/a〉
    Keywords: Bacillus subtilis/genetics/*metabolism/physiology ; Bacterial Proteins/genetics/*metabolism ; Cell Cycle Proteins/metabolism ; Cell Division ; Chromosomes, Bacterial/*metabolism ; DNA, Bacterial/*metabolism ; Microscopy, Fluorescence ; Models, Biological ; Precipitin Tests ; Recombinant Fusion Proteins/metabolism ; Replication Origin ; Spores, Bacterial/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Cannibalism by sporulating bacteria (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-06-21
    Description: Spore formation by the bacterium Bacillus subtilis is an elaborate developmental process that is triggered by nutrient limitation. Here we report that cells that have entered the pathway to sporulate produce and export a killing factor and a signaling protein that act cooperatively to block sister cells from sporulating and to cause them to lyse. The sporulating cells feed on the nutrients thereby released, which allows them to keep growing rather than to complete morphogenesis. We propose that sporulation is a stress-response pathway of last resort and that B. subtilis delays a commitment to spore formation by cannibalizing its siblings.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gonzalez-Pastor, Jose E -- Hobbs, Errett C -- Losick, Richard -- GM18568/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2003 Jul 25;301(5632):510-3. Epub 2003 Jun 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, The Biological Laboratories, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12817086" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Bacillus subtilis/genetics/metabolism/*physiology ; Bacterial Proteins/genetics/*metabolism ; Bacteriolysis ; Gene Expression Profiling ; *Gene Expression Regulation, Bacterial ; Genes, Bacterial ; Mutation ; Oligonucleotide Array Sequence Analysis ; *Operon ; Sigma Factor/genetics/metabolism ; Signal Transduction ; Spores, Bacterial/*physiology ; Transcription Factors/genetics/metabolism ; Transcription, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Checkpoints that couple gene expression to morphogenesis (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-11-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Losick, R -- Shapiro, L -- New York, N.Y. -- Science. 1993 Nov 19;262(5137):1227-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biological Laboratories, Harvard University, Cambridge, MA 02138.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8235653" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteria/genetics/growth & development/*ultrastructure ; Bacterial Proteins/genetics/*metabolism ; Flagella/metabolism/*ultrastructure ; *Gene Expression Regulation, Bacterial ; Genes, Bacterial ; *Morphogenesis ; Mutation ; Sigma Factor/genetics/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
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