PXD019073-1

PXD019073 is an original dataset announced via ProteomeXchange.

Title	A novel essential RNA-binding protein complex in Trypanosoma brucei
Description	ZC3H5 is an essential cytoplasmic trypanosome protein with a single Cx7Cx5Cx3H zinc finger domain. We here show that ZC3H5 forms a complex with three other proteins, encoded by genes Tb927.11.4900, Tb927.8.1500 and Tb927.7.3040. ZC3H5 interacts directly with Tb927.11.4900, which in turn interacts with Tb927.7.3040. Tb927.11.4900 has a circularly permuted GTPase domain, which is required for the Tb927.7.3040 interaction. RNA immunoprecipitation revealed that ZC3H5 is preferentially associated with poorly translated, low-stability mRNAs, the 5'-untranslated regions and coding regions of which were enriched in the motif (U/A)UAG(U/A). Tethering of ZC3H5, or other complex components, to a reporter repressed its expression. However, depletion of ZC3H5 in vivo did not increase the abundance of ZC3H5-bound mRNAs; instead, counter-intuitively, there were very minor decreases in a few targets. This was accompanied by marked increases in the abundance of very stable mRNAs encoding ribosomal proteins. Depletion also resulted in an increase in monosomes at the expense of large polysomes, and appearance of a "halfmer" disomes containing two 80S subunits and one 40S subunit. We speculate that the ZC3H5 complex is implicated in quality control during the translation of sub-optimal open reading frames, and that its assembly is regulated by GTP hydrolysis and GTP-GDP exchange.
HostingRepository	PRIDE
AnnounceDate	2020-09-23
AnnouncementXML	Submission_2020-09-23_06:31:30.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Thomas Ruppert
SpeciesList	scientific name: Trypanosoma brucei; NCBI TaxID: 5691;
ModificationList	No PTMs are included in the dataset
Instrument	LTQ Orbitrap Elite

Revision	Datetime	Status	ChangeLog Entry
0	2020-05-10 23:09:09	ID requested
⏵ 1	2020-09-23 06:31:31	announced
2	2024-10-22 05:12:44	announced	2024-10-22: Updated project metadata.

Bajak K, Leiss K, Clayton C, Erben E, . J Biol Chem, 295(42):14291-14304(2020) [pubmed]

submitter keyword: Trypanosoma, RNA-binding, protein complex, ZC3H5, RNA immunoprecipitation, LC-MS

Thomas Ruppert
contact affiliation	University Heidelberg, Centre for molecular biology, mass spectrometry and proteomics core facility
contact email	t.ruppert@zmbh.uni-heidelberg.de
lab head
Thomas Ruppert
contact affiliation	ZMBH, Im Neuenheimer Feld 282, 69122 Heidelberg
contact email	t.ruppert@zmbh.uni-heidelberg.de
dataset submitter

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.pride.ebi.ac.uk/pride/data/archive/2020/09/PXD019073

PRIDE project URI

• PRIDE
  1. PXD019073
     1. Label: PRIDE project
     2. Name: A novel essential RNA-binding protein complex in Trypanosoma brucei