|
| Status |
Public on Nov 25, 2019 |
| Title |
Developmental switch within the bacterial cell cycle regulator CtrA |
| Organism |
Caulobacter vibrioides NA1000 |
| Experiment type |
Genome binding/occupancy profiling by high throughput sequencing
|
| Summary |
Many bacteria acquire dissemination and virulence traits in G1-phase. CtrA, an essential and conserved cell cycle transcriptional regulator identified in the dimorphic alpha-proteobacterium Caulobacter crescentus, mysteriously switches from activating promoters in late S-phase to a different set in G1-phase. We found that a core and highly conserved determinant in the DNA-binding domain (DBD) of CtrA governs this promoter switch and that it is also required for promoter reprogramming in stationary phase in response to a (p)ppGpp alarmone signal perceived by the RNA polymerase beta subunit. A simple side chain modification in one critical residue of this DBD confers opposing developmental phenotypes and transcriptional activities. This region is also central to understanding the developmental reprogramming in the obligate intracellular Rickettsiae where replicative cells develop into dispersal cells and a naturally occurring polymorphism in the rickettsial DBD resembles a mutation that drives CtrA towards activation of the dispersal (G1-phase) program in Caulobacter.
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| |
|
| Overall design |
Examination of CtrA whole genome binding/occupancy (ChIP-Seq) in WT Caulobacter crescentus and mutants
|
| |
|
| Contributor(s) |
Delaby M, Panis G, Viollier PH |
| Citation(s) |
31598724 |
| |
| Submission date |
Jul 09, 2019 |
| Last update date |
May 01, 2023 |
| Contact name |
Patrick H. Viollier |
| E-mail(s) |
[email protected]
|
| Organization name |
University of Geneva, Faculty of Medicine / CMU
|
| Department |
Dept. Microbiology and Molecular Medicine
|
| Street address |
Rue Michel Servet 1
|
| City |
Geneva 4 |
| ZIP/Postal code |
1211 |
| Country |
Switzerland |
| |
|
| Platforms (1) |
| GPL26896 |
Illumina HiSeq 2000 (Caulobacter vibrioides NA1000) |
|
| Samples (10)
|
| GSM3933392 |
ChIP-Seq_CtrA_WT_C.crescentus_Exp phase(GHA-490) |
| GSM3933393 |
ChIP-Seq_CtrA_CtrA401_C.crescentus_Exp phase(AIYT-22) |
| GSM3933394 |
ChIP-Seq_CtrA_CtrA401SS_C.crescentus_Exp phase(AIYT-23) |
| GSM3933395 |
Total-Input_CtrA_C.crescentus_(AIYT-24) |
| GSM3933396 |
ChIP-Seq_CtrA_WT_C.crescentus_Stat phase(GHA-491) |
| GSM3933397 |
ChIP-Seq_CtrA_DspoT_C.crescentus_Stat phase(GHA-494) |
| GSM3933398 |
ChIP-Seq_CtrA_DptsP_C.crescentus_Stat phase(GHA-493) |
| GSM3933399 |
ChIP-Seq_CtrA_WTrpoB*_C.crescentus_Exp phase(AIYT-21) |
| GSM3933400 |
ChIP-Seq_CtrA_DptsP DspoT_C.crescentus_Exp phase(AIYT-19) |
| GSM3933401 |
ChIP-Seq_CtrA_DptsP DspoTrpoB*_C.crescentus_Exp phase(AIYT-20) |
|
| Relations |
| BioProject |
PRJNA553466 |
| SRA |
SRP213852 |
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