Abstract
This report presents full-genome evidence that bacterial cells use discrete transcription patterns to control cell cycle progression. Global transcription analysis of synchronized Caulobacter crescentus cells was used to identify 553 genes (19% of the genome) whose messenger RNA levels varied as a function of the cell cycle. We conclude that in bacteria, as in yeast, (i) genes involved in a given cell function are activated at the time of execution of that function, (ii) genes encoding proteins that function in complexes are coexpressed, and (iii) temporal cascades of gene expression control multiprotein structure biogenesis. A single regulatory factor, the CtrA member of the two-component signal transduction family, is directly or indirectly involved in the control of 26% of the cell cycle-regulated genes.
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, Non-P.H.S.
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Bacterial Proteins / genetics
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Bacterial Proteins / metabolism
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Binding Sites
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Caulobacter crescentus / cytology*
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Caulobacter crescentus / genetics*
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Caulobacter crescentus / growth & development
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Caulobacter crescentus / physiology
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Cell Cycle / genetics*
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Chemotaxis / genetics
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DNA-Binding Proteins*
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DNA-Directed RNA Polymerases / genetics
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Fimbriae Proteins
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Flagella / metabolism
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Gene Expression Profiling
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Gene Expression Regulation, Bacterial*
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Interphase
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Membrane Proteins / genetics
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Oligonucleotide Array Sequence Analysis
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RNA, Bacterial / genetics
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RNA, Bacterial / metabolism
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RNA, Messenger / genetics
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RNA, Messenger / metabolism
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S Phase
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Signal Transduction
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Transcription Factors*
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Transcription, Genetic
Substances
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Bacterial Proteins
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CtrA protein, Caulobacter
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DNA-Binding Proteins
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Membrane Proteins
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RNA, Bacterial
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RNA, Messenger
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Transcription Factors
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Fimbriae Proteins
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DNA-Directed RNA Polymerases