PXD022004 is an
original dataset announced via ProteomeXchange.
Dataset Summary
Title | The role of the periplasmic chaperones SurA, Skp and DegP for fitness, outer membrane integrity, antibiotic susceptibility and virulence of Acinetobacter baumannii AB5075: same-same, but different? |
Description | The outer membrane (OM) of Gram-negative bacteria efficiently protects from harmful environmental stresses such as antibiotics, disinfectants or dryness. Main constituents of the OM are integral OM β-barrel proteins (OMPs). In Gram-negative bacteria such as Escherichia coli (Ec), Yersinia enterocolitica (Ye) and Pseudomonas aeruginosa (Pa), the insertion of OMPs depends on a sophisticated biogenesis pathway. This comprises the SecYEG translocon, which enables inner membrane (IM) passage, the chaperones SurA, Skp and DegP, which facilitate the passage of β-barrel OMPs through the periplasm, and the β-barrel assembly machinery (BAM) which facilitates insertion into the OM. In Ec, Ye and Pa the deletion of SurA is particularly detrimental and leads to a loss of OM integrity, sensitization to antibiotics, and hypovirulence. In search of targets that could be exploited to develop compounds that interfere with OM integrity in Acinetobacter baumannii (Ab), we employed the multidrug-resistant strain AB5075 to generate single gene knockout strains lacking individual periplasmic chaperones. In contrast to Ec, Ye and Pa, AB5075 tolerates the lack of SurA, Skp or DegP with only weak mutant phenotypes. While the double knockout strains surAskp and surAdegP are conditionally lethal in Ec, all double deletions were well tolerated by AB5075. Strikingly, even a triple knockout strain of AB5075, lacking surA, skp and degP, was viable. Our findings underline the extreme adaptibility of Ab and suggest the existence of mechanisms bypassing or acting redundantly to the known OMP biogenesis pathway comprising SurA, Skp and DegP. |
HostingRepository | PRIDE |
AnnounceDate | 2022-08-29 |
AnnouncementXML | Submission_2022-08-29_13:06:31.338.xml |
DigitalObjectIdentifier | |
ReviewLevel | Peer-reviewed dataset |
DatasetOrigin | Original dataset |
RepositorySupport | Unsupported dataset by repository |
PrimarySubmitter | Nicolas Nalpas |
SpeciesList | scientific name: Acinetobacter baumannii; NCBI TaxID: 470; |
ModificationList | No PTMs are included in the dataset |
Instrument | Q Exactive HF |
Dataset History
Revision | Datetime | Status | ChangeLog Entry |
0 | 2020-10-15 04:23:00 | ID requested | |
⏵ 1 | 2022-08-29 13:06:31 | announced | |
Publication List
Dataset with its publication pending |
Keyword List
submitter keyword: Acinetobacter baumannii, AB5075, outer membrane, outer membrane protein biogenesis, SurA, Skp, DegP |
Contact List
Monika Schütz |
contact affiliation | Institut für Medizinische Mikrobiologie und Hygiene Elfriede-Aulhorn-Str. 6 72076 Tübingen Germany |
contact email | Monika.Schuetz@med.uni-tuebingen.de |
lab head | |
Nicolas Nalpas |
contact affiliation | Tuebingen University |
contact email | nalpas.nicolas@gmail.com |
dataset submitter | |
Full Dataset Link List
Dataset FTP location
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PRIDE project URI |
Repository Record List
[ + ]
[ - ]
- PRIDE
- PXD022004
- Label: PRIDE project
- Name: The role of the periplasmic chaperones SurA, Skp and DegP for fitness, outer membrane integrity, antibiotic susceptibility and virulence of Acinetobacter baumannii AB5075: same-same, but different?