Asymmetrical distribution of the second messenger c-di-GMP upon bacterial cell division.
Asymmetrical distribution of the second messenger c-di-GMP upon bacterial cell division.
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DOI:
10.1126/science.1188658
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发表时间:
2010-06-04
期刊:
影响因子:
--
通讯作者:
Miller SI
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文献类型:
--
作者:
Christen M;Kulasekara HD;Christen B;Kulasekara BR;Hoffman LR;Miller SI
The bacterial second messenger cyclic diguanosine monophosphate (c-di-GMP) regulates cellular motility and the synthesis of organelles and molecules that promote adhesion to a variety of biological and nonbiological surfaces. These properties likely require tight spatial and temporal regulation of c-di-GMP concentration. We have developed genetically encoded fluorescence resonance energy transfer (FRET)–based biosensors to monitor c-di-GMP concentrations within single bacterial cells by microscopy. Fluctuations of c-di-GMP were visualized in diverse Gram-negative bacterial species and observed to be cell cycle dependent. Asymmetrical distribution of c-di-GMP in the progeny correlated with the time of cell division and polarization for Caulobacter crescentus and Pseudomonas aeruginosa. Thus, asymmetrical distribution of c-di-GMP was observed as part of cell division, which may indicate an important regulatory step in extracellular organelle biosynthesis or function.
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影响因子:
16
作者:
Paul K;Nieto V;Carlquist WC;Blair DF;Harshey RM
通讯作者:
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DOI:
10.1126/science.1159519
发表时间:
2008-07-18
期刊:
Science (New York, N.Y.)
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