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PXD018987-1

PXD018987 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitleArabidopsis mTERF9 protein promotes chloroplast ribosomal assembly and translation by establishing ribonucleoprotein interactions in vivo
DescriptionThe mitochondrial transcription termination factor proteins are nuclear-encoded nucleic acid binders defined by degenerate tandem helical-repeats of ~30 amino acids. They are found in metazoans and plants where they localize in organelles. In higher plants, the mTERF family comprises ~30 members and several of these have been linked to plant development and response to abiotic stress. However, knowledge of the molecular basis underlying these physiological effects is scare. We show that the Arabidopsis mTERF9 protein, promotes the accumulation of the 16S rRNA and the formation of the 23S rRNA first hidden break in chloroplasts, and co-immunoprecipitates with the 16S rRNA. Furthermore, mTERF9 is found in large complexes containing ribosomes and polysomes in chloroplasts. The analysis of the in vivo mTERF9 protein interactome identified many ribosomal proteins whose assembly into 70S ribosomes is compromised in the null mterf9 mutant. mTERF9 additionally interacts with putative ribosome biogenesis factors and CPN60 chaperonins. Yeast protein interaction assays revealed that mTERF9 has the capacity to directly interact with these proteins. Our data demonstrate that mTERF9 integrates protein-protein and protein-RNA interactions to promote chloroplast ribosomal assembly and translation. Besides extending our knowledge of mTERF molecular functions in plants, these findings provide important insight into the chloroplast ribosome biogenesis.
HostingRepositoryPRIDE
AnnounceDate2020-12-15
AnnouncementXMLSubmission_2020-12-15_05:57:53.xml
DigitalObjectIdentifierhttps://dx.doi.org/10.6019/PXD018987
ReviewLevelPeer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportSupported dataset by repository
PrimarySubmitterLauriane Kuhn
SpeciesList scientific name: Arabidopsis thaliana (Mouse-ear cress); NCBI TaxID: 3702;
ModificationListPhospho; Oxidation; Acetyl; Carbamidomethyl
InstrumentQ Exactive
Dataset History
RevisionDatetimeStatusChangeLog Entry
02020-05-05 00:55:08ID requested
12020-12-15 05:57:54announced
Publication List
Dataset with its publication pending
Keyword List
submitter keyword: mTERF, chloroplast, ribosome, RNA
Contact List
Kamel Hammani
contact affiliationInstitut de Biologie Moléculaire des Plantes, Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg, 12 rue du Général Zimmer, 67084 Strasbourg, France.
contact emailkamel.hammani@ibmp-cnrs.unistra.fr
lab head
Lauriane Kuhn
contact affiliationCNRS, IBMC, FRC1589
contact emaill.kuhn@ibmc-cnrs.unistra.fr
dataset submitter
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Dataset FTP location
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