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PXD045835

PXD045835 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitlePseudomonas aeruginosa Heme Metabolites Biliverdin IX and IX are Integral to Lifestyle Adaptations Associated with Chronic Infection
DescriptionPseudomonas aeruginosa is a versatile opportunistic pathogen requiring iron for its survival and virulence within the host. The ability to switch to heme as an iron source provides an advantage in chronic infection. We have recently shown the extracellular heme metabolites biliverdin IX (BVIX) and/or BVIX positively regulate the heme dependent cell surface signaling cascade. We further investigated the role of BVIX and BVIX in cell signaling utilizing allelic strains lacking a functional HemO (hemOin), or one reengineered to produce BVIX (hemO). Compared to PAO1 both strains show a heme dependent growth defect, decreased swarming and twitching and less robust biofilm formation. Interestingly, the motility and biofilm defects were partially rescued on addition of exogenous BVIX and BVIX. Utilizing LC-MS/MS we performed a comparative proteomics and metabolomics analysis of PAO1 versus the allelic strains in shaking and static conditions. In shaking conditions, the hemO allelic strains showed a significant increase in proteins involved in quorum sensing (QS), phenazine production and chemotaxis.Metabolite profiling further revealed increased levels of PQS and phenazine metabolites. In static conditions we observed a significant repression of chemosensory pathways and Type IV pili (TFP) biogenesis proteins as well as several phosphodiesterases associated with biofilm dispersal. We propose BVIX metabolites function as signaling and chemotactic molecules integrating heme utilization as an iron source into the adaptation of P. aeruginosa from a planktonic to sessile lifestyle.
HostingRepositoryPRIDE
AnnounceDate2024-01-19
AnnouncementXMLSubmission_2024-01-19_13:27:05.641.xml
DigitalObjectIdentifier
ReviewLevelPeer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportUnsupported dataset by repository
PrimarySubmitterMehari Weldemariam
SpeciesList scientific name: Pseudomonas aeruginosa PABL056; NCBI TaxID: 1214916;
ModificationListacetylated residue; iodoacetamide derivatized residue
InstrumentOrbitrap Fusion Lumos
Dataset History
RevisionDatetimeStatusChangeLog Entry
02023-09-29 18:25:26ID requested
12024-01-19 13:27:06announced
Publication List
10.1128/MBIO.02763-23;
Keyword List
submitter keyword: proteomics, metabolomics, Type IV pili and chemotaxis, heme, biliverdin,Pseudomonas aeruginosa
Contact List
Kane Maureen
contact affiliationDepartment of Pharmaceutical Sciences School of Pharmacy University of Maryland Baltimore
contact emailmkane@rx.umaryland.edu
lab head
Mehari Weldemariam
contact affiliationUniversity of Maryland Baltimore
contact emailmweldemariam@rx.umaryland.edu
dataset submitter
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