PXD037572

PXD037572 is an original dataset announced via ProteomeXchange.

Title	Proteomic analysis of Eya3 binding partners
Description	Eyes absent homolog 3 (EYA3) is a transcriptional cofactor that is known to partner with the sine oculis homeobox (SIX) family to regulate gene expression. In this study, we characterized a novel splice isoform of EYA3, including the alternative cassette exon 7 (EYA3+ex7), that becomes more highly expressed compared to the isoform lacking exon 7 (EYA3Δex7) during muscle cell differentiation and muscle development. This developmentally-regulated splicing pattern was evolutionarily conserved in humans, mice, rats, chickens, and zebrafish. We found that EYA3 isoforms are vital to proliferation and differentiation of myoblasts in a cell culture model of myogenesis. To understand the underlying mechanism, we defined the transcriptional networks controlled by EYA3 through RNA-sequencing of EYA3 depleted cells. We then hypothesized that binding partners of EYA3+ex7 and EYA3Δex7 might contribute to the mechanism by which they regulate transcription. An affinity-purification mass spectrometry approach was used to identify binding partners of EYA3 isoforms by heterologous expression of hemagglutinin (HA) tagged isoforms in HEK293T cells. 26 binding partners (defined as those with log2(FC) > 1 and p < 0.05 compared to HA epitope tag control) were shared among the EYA3 isoforms, including five transcription factors: zinc finger and BTB domain containing 1 (ZBTB1), tumor protein p53 (TP53), SIX5, SIX2, and SIX4. We next demonstrated that ZBTB1 and SIX4 share overlapping transcriptional targets with EYA3, indicating that EYA3 partners with ZBTB1 or SIX4 to regulate gene expression. Three and thirteen unique binding partners were discovered for EYA3Δex7 and EYA3+ex7, respectively. Therefore, inclusion of Eya3 exon 7 may allow for unique interactions and contribute to functions of EYA3+ex7 that are distinct from EYA3Δex7. This dataset includes affinity purified data for Eya3 isoforms in HEK293T cells.
HostingRepository	PRIDE
AnnounceDate	2023-10-13
AnnouncementXML	Submission_2023-10-13_05:53:16.468.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	ChristineMills
SpeciesList	scientific name: Homo sapiens (Human); NCBI TaxID: 9606;
ModificationList	No PTMs are included in the dataset
Instrument	Q Exactive

Revision	Datetime	Status	ChangeLog Entry
0	2022-10-19 03:11:32	ID requested
⏵ 1	2023-10-13 05:53:16	announced

Dataset with its publication pending

submitter keyword: transcription, Eya3,alternative splicing, myogenesis

JimenaGiudice
contact affiliation	Department of Cell Biology and Physiology, McAllister Heart Institute, The University of North Carolina at Chapel Hill
contact email	jimena_giudice@med.unc.edu
lab head
ChristineMills
contact affiliation	University of North Carolina - Chapel Hill
contact email	allie.mills@unc.edu
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/2023/10/PXD037572

PRIDE project URI

• PRIDE
  1. PXD037572
     1. Label: PRIDE project
     2. Name: Proteomic analysis of Eya3 binding partners