PXD037737 is an
original dataset announced via ProteomeXchange.
Dataset Summary
Title | Proteomics reveals virulence adaptation of Pseudomonas aeruginosa phospholipase mutant with altered membrane phospholipid composition |
Description | Membrane protein and phospholipid (PL) compositions change in response to environmental cues and during infections. Covalent modification (e.g., unsaturation and cyclopropanation) and remodeling the acyl chain length of PLs is an important bacterial adaptation mechanism. However, little is known about which bacterial pathways are regulated in response to the alteration of PL composition. Here, we show that P. aeruginosa PlaF, which modulates membrane PL composition, is important for biofilm biogenesis, and we performed whole-cell quantitative proteomics of P. aeruginosa wild-type and ∆plaF biofilms to identify pathways regulated by PlaF. The results revealed profound alterations in the abundance of 14 two-component systems (TCS), including the PprA-PprB, which controls the transition to biofilm. Activation of PprA-the PprB system observed by proteomics was confirmed by mRNA quantification. Furthermore, we have observed a unique phosphorylation pattern of transcriptional regulators, transporters and metabolic enzymes, and differential production of nine proteases in ∆plaF, indicating that PlaF-mediated virulence adaptation involves complex transcriptional and post-transcriptional regulation. Moreover, proteomics revealed that the pyoverdin-mediated iron uptake pathway proteins were depleted in ∆plaF, which agrees with decreased concentrations of extracellular pyoverdine and intracellular iron in ∆plaF and is likely responsible for its prolonged lag phase due to reduced iron uptake. Conversely, the accumulation of proteins from alternative iron-uptake systems in ∆plaF suggests that PlaF may function as a switch between different iron-acquisition pathways. The observation that ∆plaF accumulates PL-acyl chain modifying enzymes and PlsX, an initiator of de novo PL synthesis, reveals novel insights into the relationship between degradation, covalent modification and biosynthesis of PLs for membrane homeostasis. Although the precise mechanism by which PlaF simultaneously affects multiple pathways remains to be elucidated, we suggest that PlaF-catalyzed degradation of PLs is a signal which is amplified by proteins of TCS, phosphorylation and proteolytic degradation systems to elicit the global adaptive response in P. aeruginosa. |
HostingRepository | PRIDE |
AnnounceDate | 2023-11-14 |
AnnouncementXML | Submission_2023-11-14_08:45:00.058.xml |
DigitalObjectIdentifier | |
ReviewLevel | Peer-reviewed dataset |
DatasetOrigin | Original dataset |
RepositorySupport | Unsupported dataset by repository |
PrimarySubmitter | Gereon Poschmann |
SpeciesList | scientific name: Pseudomonas aeruginosa PAO1; NCBI TaxID: 208964; |
ModificationList | acetylated residue; monohydroxylated residue; iodoacetamide derivatized residue |
Instrument | Q Exactive |
Dataset History
Revision | Datetime | Status | ChangeLog Entry |
0 | 2022-10-26 01:44:19 | ID requested | |
1 | 2023-04-25 08:48:57 | announced | |
⏵ 2 | 2023-11-14 08:45:08 | announced | 2023-11-14: Updated project metadata. |
Publication List
Caliskan M, Poschmann G, Gudzuhn M, Waldera-Lupa D, Molitor R, Strunk CH, Streit WR, Jaeger KE, St, ü, hler K, Kovacic F, Pseudomonas aeruginosa responds to altered membrane phospholipid composition by adjusting the production of two-component systems, proteases and iron uptake proteins. Biochim Biophys Acta Mol Cell Biol Lipids, 1868(6):159317(2023) [pubmed] |
Keyword List
submitter keyword: two-component systems, phospholipids, physiology,biofilm, iron homeostasis, proteases, pathogen |
Contact List
Gereon Poschmann |
contact affiliation | Proteome Research (AG Stühler) Institute of Molecular Medicine Heinrich Heine University Düsseldorf 40225 Düsseldorf Germany |
contact email | gereon.poschmann@hhu.de |
lab head | |
Gereon Poschmann |
contact affiliation | Molecular Proteomics Laboratory |
contact email | gereon.poschmann@hhu.de |
dataset submitter | |
Full Dataset Link List
Dataset FTP location
NOTE: Most web browsers have now discontinued native support for FTP access within the browser window. But you can usually install another FTP app (we recommend FileZilla) and configure your browser to launch the external application when you click on this FTP link. Or otherwise, launch an app that supports FTP (like FileZilla) and use this address: ftp://ftp.pride.ebi.ac.uk/pride/data/archive/2023/04/PXD037737 |
PRIDE project URI |
Repository Record List
[ + ]
[ - ]
- PRIDE
- PXD037737
- Label: PRIDE project
- Name: Proteomics reveals virulence adaptation of Pseudomonas aeruginosa phospholipase mutant with altered membrane phospholipid composition