PXD013046

PXD013046 is an original dataset announced via ProteomeXchange.

Dataset Summary

Title	Global role of the membrane protease LonB in Archaea: Potential protease targets revealed by quantitative proteome analysis of a lonB mutant in Haloferax volcanii
Description	The membrane-associated LonB protease is essential for viability in Haloferax volcanii, however, the cellular processes affected by this protease in archaea are unknown. In this study, the impact of a lon conditional mutation (down-regulation) on H. volcanii physiology was examined by comparing proteomes of parental and mutant cells using shotgun proteomics. A total of 1778 proteins were identified (44% of H. volcanii predicted proteome) and 142 changed significantly in amount (≥2 fold). Of these, 66 were augmented in response to Lon deficiency suggesting they could be Lon substrates. The “Lon subproteome” included soluble and predicted membrane proteins expected to participate in diverse cellular processes. The dramatic stabilization of phytoene synthase (57 fold) in concert with overpigmentation of lon mutant cells suggests that Lon controls carotenogenesis in H. volcanii. Several hypothetical proteins, which may reveal novel functions and/or be involved in adaptation to extreme environments, were notably increased (300 fold). This study, which represents the first proteome examination of a Lon deficient archaeal cell, shows that Lon has a strong impact on H. volcanii physiology evidencing the cellular processes controlled by this protease in Archaea. Additionally, this work provides a platform for the discovery of novel targets of Lon proteases.
HostingRepository	jPOST
AnnounceDate	2020-03-11
AnnouncementXML	Submission_2022-09-18_03:05:35.236.xml
DigitalObjectIdentifier
ReviewLevel	Non peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Micaela Cerletti
SpeciesList	scientific name: Haloferax volcanii DS2; NCBI TaxID: 309800;
ModificationList	unknown modification; 2-pyrrolidone-5-carboxylic acid (Gln); L-methionine sulfoxide; deamidated residue
Instrument	LTQ Orbitrap Elite

Dataset History

Revision	Datetime	Status	ChangeLog Entry
0	2019-03-11 10:49:27	ID requested
1	2020-03-10 08:00:05	announced
2	2021-02-04 16:58:26	announced	2021-02-04: Updated FTP location.
⏵ 3	2022-09-18 03:05:35	announced	2022-09-18: Updated FTP location.

Publication List

Dataset with its publication pending

Dataset with its publication pending

Keyword List

submitter keyword: LonB protease, Quantitative shotgun proteomics, Protein substrates, Phytoene synthase, Archaea, Haloferax volcanii

submitter keyword: LonB protease, Quantitative shotgun proteomics, Protein substrates, Phytoene synthase, Archaea, Haloferax volcanii

Contact List

Rosana De Castro
lab head
Micaela Cerletti
contact affiliation	IIB-UNMdP
dataset submitter

Full Dataset Link List

jPOST dataset URI
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.jpostdb.org/JPST000565/

jPOST dataset URI

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.jpostdb.org/JPST000565/