PMID:9209044: Difference between revisions

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<span style = 'font-size: large'> '''Addinall, SG, Cao, C and Lutkenhaus, J'''  (1997) Temperature shift experiments with an ftsZ84(Ts) strain reveal rapid dynamics of FtsZ localization and indicate that the Z ring is required throughout septation and cannot reoccupy division sites once constriction has initiated.''J. Bacteriol.'' '''179''':4277-84</span>
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|{{TableHeadingColor}} |'''Abstract''' || <protect>FtsZ is an essential division protein in bacteria that functions by forming a ring at midcell that mediates septation. To further study the function of the Z ring the effect of a temperature-sensitive mutation, ftsZ84(Ts), on ring dynamics and septal progression was examined. Shifting a strain carrying an ftsZ84(Ts) mutation to the nonpermissive temperature led to loss of Z rings within 1 min. Septal ingrowth was immediately inhibited, and sharply demarcated septa, present at the time of the shift, were gradually replaced by blunted septa. These results indicate that the Z ring is required throughout septation. Shifting filaments to permissive temperature led to a rapid localization of FtsZ84 at regular intervals. Included in these localization events were complete and partial rings as well as spots, although some of these eventually aborted. These results reveal the rapid dynamics of FtsZ localization and indicate that nucleation sites are formed in the absence of FtsZ function. Interestingly, Z rings could not reform at division sites that were constricted although they could reform at sites that had not begun constriction.</protect>
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'''No author listed''' (1997) Temperature shift experiments with an ftsZ84(Ts) strain reveal rapid dynamics of FtsZ localization and indicate that the Z ring is required throughout septation and cannot reoccupy division sites once constriction has initiated. ''J. Bacteriol.'' '''179''':4277-84
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!align=left  |Abstract
*  [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=9209044 PubMed]
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FtsZ is an essential division protein in bacteria that functions by forming a ring at midcell that mediates septation. To further study the function of the Z ring the effect of a temperature-sensitive mutation, ftsZ84(Ts), on ring dynamics and septal progression was examined. Shifting a strain carrying an ftsZ84(Ts) mutation to the nonpermissive temperature led to loss of Z rings within 1 min. Septal ingrowth was immediately inhibited, and sharply demarcated septa, present at the time of the shift, were gradually replaced by blunted septa. These results indicate that the Z ring is required throughout septation. Shifting filaments to permissive temperature led to a rapid localization of FtsZ84 at regular intervals. Included in these localization events were complete and partial rings as well as spots, although some of these eventually aborted. These results reveal the rapid dynamics of FtsZ localization and indicate that nucleation sites are formed in the absence of FtsZ function. Interestingly, Z rings could not reform at division sites that were constricted although they could reform at sites that had not begun constriction.
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[http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=9209044 PubMed] [http://www.ncbi.nlm.nih.gov/pmc/articles/PMC179250 PMC179250]
 
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!align=left  |Keywords
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Escherichia coli/chemistry; Escherichia coli/growth & development; Escherichia coli/ultrastructure; Fushi Tarazu Transcription Factors; Homeodomain Proteins/analysis; Mutation; Temperature


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==Significance {{HelpIcon|Help:Literature}} ==
==Significance {{HelpIcon|Help:Literature}} ==
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{{LitSignificance}}

Revision as of 19:58, 1 September 2013

Citation

No author listed (1997) Temperature shift experiments with an ftsZ84(Ts) strain reveal rapid dynamics of FtsZ localization and indicate that the Z ring is required throughout septation and cannot reoccupy division sites once constriction has initiated. J. Bacteriol. 179:4277-84

Abstract

FtsZ is an essential division protein in bacteria that functions by forming a ring at midcell that mediates septation. To further study the function of the Z ring the effect of a temperature-sensitive mutation, ftsZ84(Ts), on ring dynamics and septal progression was examined. Shifting a strain carrying an ftsZ84(Ts) mutation to the nonpermissive temperature led to loss of Z rings within 1 min. Septal ingrowth was immediately inhibited, and sharply demarcated septa, present at the time of the shift, were gradually replaced by blunted septa. These results indicate that the Z ring is required throughout septation. Shifting filaments to permissive temperature led to a rapid localization of FtsZ84 at regular intervals. Included in these localization events were complete and partial rings as well as spots, although some of these eventually aborted. These results reveal the rapid dynamics of FtsZ localization and indicate that nucleation sites are formed in the absence of FtsZ function. Interestingly, Z rings could not reform at division sites that were constricted although they could reform at sites that had not begun constriction.

Links

PubMed PMC179250

Keywords

Escherichia coli/chemistry; Escherichia coli/growth & development; Escherichia coli/ultrastructure; Fushi Tarazu Transcription Factors; Homeodomain Proteins/analysis; Mutation; Temperature

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