PXD012929 is an
original dataset announced via ProteomeXchange.
Dataset Summary
Title | The Hsp70 Chaperone System Stabilizes a Thermo-sensitive Subproteome |
Description | Stress-inducible molecular chaperones have essential roles in maintaining protein homeostasis, but the extent to which they affect global proteome stability remains unclear. Here, we analyzed the effects of the DnaK (Hsp70) system on protein stability in Escherichia coli using pulse proteolysis combined with quantitative proteomics. We quantified ~1500 soluble proteins and found ~500 of them to be protease-sensitive under normal growth conditions, indicating a high prevalence of conformationally dynamic states. Acute heat stress resulted in unfolding of an additional ~200 proteins, reflected in exposure of otherwise buried hydrophobic regions. Overexpression of the DnaK chaperone system markedly stabilized most thermo-sensitive proteins, including numerous ribosomal proteins as well as large, hetero-oligomeric proteins that frequently contain the evolutionary ancient c.37 fold (P-loop nucleoside triphosphate hydrolases). |
HostingRepository | PRIDE |
AnnounceDate | 2019-06-24 |
AnnouncementXML | Submission_2019-08-08_03:21:44.xml |
DigitalObjectIdentifier | |
ReviewLevel | Peer-reviewed dataset |
DatasetOrigin | Original dataset |
RepositorySupport | Unsupported dataset by repository |
PrimarySubmitter | Liang Zhao |
SpeciesList | scientific name: Escherichia coli; NCBI TaxID: 562; |
ModificationList | No PTMs are included in the dataset |
Instrument | Q Exactive |
Dataset History
Revision | Datetime | Status | ChangeLog Entry |
0 | 2019-03-01 03:51:53 | ID requested | |
1 | 2019-06-24 05:43:37 | announced | |
⏵ 2 | 2019-08-08 03:21:46 | announced | Updated publication reference for PubMed record(s): 31365874. |
Publication List
Zhao L, Vecchi G, Vendruscolo M, K, รถ, rner R, Hayer-Hartl M, Hartl FU, coli. Cell Rep, 28(5):1335-1345.e6(2019) [pubmed] |
Keyword List
curator keyword: Biological |
submitter keyword: Chaperones, pulse proteolysis, proteomics, protein stability, |
Contact List
Liang Zhao |
contact affiliation | Department of Cellular Biochemistry, Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany |
contact email | zhao@biochem.mpg.de |
lab head | |
Liang Zhao |
contact affiliation | Max Planck Institute of Biochemistry |
contact email | zhao@biochem.mpg.de |
dataset submitter | |
Full Dataset Link List
Dataset FTP location
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PRIDE project URI |
Repository Record List
[ + ]
[ - ]
- PRIDE
- PXD012929
- Label: PRIDE project
- Name: The Hsp70 Chaperone System Stabilizes a Thermo-sensitive Subproteome