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PXD023645

PXD023645 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitleThe strategy of a novel way to enhance bacterial motility
DescriptionBacterial motility shows a strong evolvable feature depending on the environment. Hyper-motile E. coli could be isolated by evolving non-motile E. coli due to the mutations that enhanced transcriptional expression of the master regulator of the flagellum biosynthesis, FlhDC. These hyper-motile isolates showed reduced growth fitness but with the molecular mechanisms unrevealed. Here we obtained a novel type of hyper-motile isolates by evolving a weakly-motile E. coli K12 strain on the soft agar plates. These isolates carried high accumulated FlhDC proteins and they shared one single point mutation of ClpXV78F. The V78F affected the ATP binding to ClpX via steric repulsive effect and the mutated ClpXP protease lost most of its ability to degraded FlhDC and some other of its known targets. The signal tag of FlhDC for ClpXP recognition was also characterized. Intriguingly, in the hyper-motile strains, the highly enhanced expression of the motility genes was accompanied by the reduced expression of stress resistance genes relating to the reduced fitness of these isolates. Hence, ClpX appeared to be a novel and hot locus during the evolution of bacterial motility and the molecular mechanism of the trade-off between motility and growth was proposed for the first time.
HostingRepositoryPRIDE
AnnounceDate2021-11-25
AnnouncementXMLSubmission_2021-11-25_06:58:19.291.xml
DigitalObjectIdentifier
ReviewLevelPeer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportUnsupported dataset by repository
PrimarySubmitterBingyu Li
SpeciesList scientific name: Escherichia coli; NCBI TaxID: 562;
ModificationListNo PTMs are included in the dataset
InstrumenttimsTOF Pro
Dataset History
RevisionDatetimeStatusChangeLog Entry
02021-01-18 00:07:13ID requested
12021-11-25 06:58:19announced
Publication List
Dataset with its publication pending
Keyword List
submitter keyword: Swimming motility
Flagella
ClpX
trade-off
Contact List
Conghui You
contact affiliationShenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanology, Shenzhen University, Shenzhen, Guangdong, P. R. China
contact emailcyou@szu.edu.cn
lab head
Bingyu Li
contact affiliationShenzhen University
contact emailbyli@szu.edu.cn
dataset submitter
Full Dataset Link List
Dataset FTP location
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