Difference between revisions of "Main Page"

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<big>'''Paper of the month: October 2014'''</big>  
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<big>'''Paper of the month: November 2014'''</big>  
* Drug exporters help the bacterial cell to cope with potentially toxic compounds. The expression of the transporters is usually switched on in response to the transported drugs. [http://www.ncbi.nlm.nih.gov/pubmed/25217586 Reilman et al.] have studied the regulation of the [[BmrC]]/[[BmrD]] multidrug [[ABC transporter]] in ''B. subtilis''. They report that the induction of ''[[bmrC]]-[[bmrD]]'' depends on the translation of a small leader peptide, [[BmrB]]. This is the first report on a ribosome-mediated transcriptional attenuation mechanism in the control of a multidrug [[ABC transporter]].
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* Integration of prophages into coding sequences of the host genome results in loss of function of the interrupted gene. In ''B. subtilis'' 168, the [[SP-beta prophage]] is inserted into a uncharacterized spore polysaccharide synthesis gene, ''spsM''. In vegetative cells, the lytic cycle is induced in response to DNA damage. In the process, the [[SP-beta prophage]] is excised from the genome to form phage particles. Now, [http://www.ncbi.nlm.nih.gov/pubmed/25299644 Abe et al.] demonstrate that the excision of the [[SP-beta prophage]] also occurs systematically during [[sporulation]] to reconstitute a functional ''spsM'' gene from the incomplete ''[[yodU]]'' and ''[[ypqP]]'' [[pseudogenes]]. Because phage excision is limited to the mother cell genome, and does not occur in the forespore genome, the [[SP-beta prophage]] is an integral part of the spore genome. Thus, after [[germination]], the [[SP-beta prophage]] is propagated vertically to the progeny. The authors suggest their results indicate that the two pathways of [[SP-beta prophage]] excision support both the phage life cycle and normal [[sporulation]] of the host cells.
* '''Relevant ''Subti''Wiki pages:''' [[BmrB]], [[ABC transporter]], ''[[bmrC]]-[[bmrD]]'', [[AbrB]]
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* '''Relevant ''Subti''Wiki pages:''' [[SP-beta prophage]], [[sporulation]], ''[[yodU]], [[ypqP]]'', [[SprA]], [[SprB]]
<pubmed> 25217586 </pubmed>
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<pubmed> 25299644 </pubmed>
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* See also:
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<pubmed> 25326298 </pubmed>
 
* [[Previous papers of the month]]
 
* [[Previous papers of the month]]
  

Revision as of 16:43, 14 November 2014

Welcome to SubtiWiki! - Bacillus subtilis annotation the "wiki" way!

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Paper of the month: November 2014

  • Integration of prophages into coding sequences of the host genome results in loss of function of the interrupted gene. In B. subtilis 168, the SP-beta prophage is inserted into a uncharacterized spore polysaccharide synthesis gene, spsM. In vegetative cells, the lytic cycle is induced in response to DNA damage. In the process, the SP-beta prophage is excised from the genome to form phage particles. Now, Abe et al. demonstrate that the excision of the SP-beta prophage also occurs systematically during sporulation to reconstitute a functional spsM gene from the incomplete yodU and ypqP pseudogenes. Because phage excision is limited to the mother cell genome, and does not occur in the forespore genome, the SP-beta prophage is an integral part of the spore genome. Thus, after germination, the SP-beta prophage is propagated vertically to the progeny. The authors suggest their results indicate that the two pathways of SP-beta prophage excision support both the phage life cycle and normal sporulation of the host cells.
  • Relevant SubtiWiki pages: SP-beta prophage, sporulation, yodU, ypqP, SprA, SprB

  • See also:


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  • August 2014: The first mobile application for SubtiWiki is now available for users of Android phones: Go for SubtiWiki in Google Play! IPhone users, please be patient! You will be served next! Click here to install!
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  • March 2013: updated Excel files that map all genes to categories and regulons as well as the general updated identity mapping of all genes were uploaded.
  • October 2012: the essential genes have been categorized
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  • April 2012: Links for expression data under 104 different conditions (based on Nicolas et al., 2012) have been added to the expression section of the individual gene pages
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Genes (examples) Additional pages
spo0A SubtiPathways
glnA SubtInteract
rny SubtiExpress
psdA Regulons
pckA methods
dnaA metabolism
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