PXD024816 is an
original dataset announced via ProteomeXchange.
Dataset Summary
Title | Mutation of Arabidopsis SME1 improves oxidative stress resilience |
Description | Alternative splicing is an important posttranscriptional gene regulatory process, acting in diverse adaptive and basal plant processes. Splicing of precursor-messenger RNA (pre-mRNA) is catalyzed by a dynamic ribonucleoprotein complex, termed the spliceosome. In a suppressor screen, we identified a nonsense mutation in the Sm protein SME1 to alleviate photorespiratory H2O2-dependent cell death in catalase-deficient plants. Furthermore, sme1-2 mutants showed increased tolerance to the superoxide-generating herbicide methyl viologen. mRNA-seq and proteomic analyses indicated a constitutive stress response and pre-mRNA splicing alterations in sme1-2 mutants under control conditions. With a pulldown experiment, using SME1 as a bait, we provide experimental evidence for proteins associated with Arabidopsis thaliana spliceosome complexes, by identifying almost 50 proteins homologous to mammalian spliceosome-associated proteins and propose four novel proteins previously not-reported or hypothesized to be part of plant spliceosome complexes. Mutation of one of these interactors, the Sm core assembly protein ICLN also resulted in a decreased sensitivity to methyl viologen. Taken together, we show that SME1 mutation and impaired snRNP assembly result in enhanced resilience to oxidative stress. |
HostingRepository | PRIDE |
AnnounceDate | 2023-03-03 |
AnnouncementXML | Submission_2023-03-03_00:49:58.228.xml |
DigitalObjectIdentifier | |
ReviewLevel | Peer-reviewed dataset |
DatasetOrigin | Original dataset |
RepositorySupport | Unsupported dataset by repository |
PrimarySubmitter | PatrickWillems |
SpeciesList | scientific name: Arabidopsis thaliana (Mouse-ear cress); NCBI TaxID: 3702; |
ModificationList | monohydroxylated residue; iodoacetamide derivatized residue |
Instrument | Q Exactive HF |
Dataset History
Revision | Datetime | Status | ChangeLog Entry |
0 | 2021-03-18 01:02:37 | ID requested | |
⏵ 1 | 2023-03-03 00:49:58 | announced | |
Publication List
Dataset with its publication pending |
Keyword List
submitter keyword: Arabidopsis thaliana, spliceosome, CATALASE2, oxidative stress, Sm protein |
Contact List
Frank VanBreusegem |
contact affiliation | Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium; Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium |
contact email | frbre@psb.ugent.be |
lab head | |
PatrickWillems |
contact affiliation | PSB-VIB |
contact email | pawil@psb.ugent.be |
dataset submitter | |
Full Dataset Link List
Dataset FTP location
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PRIDE project URI |
Repository Record List
[ + ]
[ - ]
- PRIDE
- PXD024816
- Label: PRIDE project
- Name: Mutation of Arabidopsis SME1 improves oxidative stress resilience