PXD049136 is an
original dataset announced via ProteomeXchange.
Dataset Summary
Title | Widespread prevalence of a post-translational modification in activation of an essential bacterial DNA damage response |
Description | DNA methylation plays central roles in diverse cellular processes, ranging from error-correction during replication to regulation of bacterial defense mechanisms. Nevertheless, certain aberrant methylation modifications can have lethal consequences. The mechanisms by which bacteria detect and respond to such damage remain incompletely understood. Here, we discover a highly conserved but previously uncharacterized transcription factor (Cada2), which orchestrates a methylation-dependent adaptive response in Caulobacter. This response operates independently of the SOS response, governs the expression of genes crucial for direct repair, and is essential for surviving methylation-induced damage. Our molecular investigation of Cada2 reveals a cysteine methylation-dependent post-translational modification and mode of action distinct from its E. coli counterpart, a trait conserved across all bacteria harboring a Cada2-like homolog instead. Extending across the bacterial kingdom, our findings support the notion of divergence and co-evolution of adaptive response transcription factors and their corresponding sequence-specific DNA motifs. Despite this diversity, the ubiquitous prevalence of adaptive response regulators underscores the significance of a transcriptional switch, mediated by methylation post-translational modification, in driving a specific and essential bacterial DNA damage response. |
HostingRepository | PRIDE |
AnnounceDate | 2024-10-22 |
AnnouncementXML | Submission_2024-10-22_06:28:59.754.xml |
DigitalObjectIdentifier | |
ReviewLevel | Peer-reviewed dataset |
DatasetOrigin | Original dataset |
RepositorySupport | Unsupported dataset by repository |
PrimarySubmitter | Aditya Kamat |
SpeciesList | scientific name: Caulobacter crescentus (strain NA1000 / CB15N); NCBI TaxID: 565050; |
ModificationList | monomethylated residue |
Instrument | Orbitrap Fusion |
Dataset History
Revision | Datetime | Status | ChangeLog Entry |
0 | 2024-02-03 08:38:15 | ID requested | |
1 | 2024-02-09 08:31:41 | announced | |
⏵ 2 | 2024-10-22 06:29:00 | announced | 2024-10-22: Updated project metadata. |
Publication List
Dataset with its publication pending |
Keyword List
submitter keyword: methylation damage, Adaptive response, DNA repair,DNA damage, bacteria, Caulobacter, SOS response, bacterial PTMs |
Contact List
Dr. Anjana Badrinarayanan |
contact affiliation | National Centre for Biological Sciences (NCBS), Bangalore, India |
contact email | anjana@ncbs.res.in |
lab head | |
Aditya Kamat |
contact affiliation | National Centre for Biological Sciences |
contact email | adityak@ncbs.res.in |
dataset submitter | |
Full Dataset Link List
Dataset FTP location
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PRIDE project URI |
Repository Record List
[ + ]
[ - ]
- PRIDE
- PXD049136
- Label: PRIDE project
- Name: Widespread prevalence of a post-translational modification in activation of an essential bacterial DNA damage response