PXD026991-2

PXD026991 is an original dataset announced via ProteomeXchange.

Title	SUPT3H-less SAGA coactivator can assemble and function without significantly perturbing RNA polymerase II transcription in mammalian cells
Description	Co-activator complexes regulate chromatin accessibility and transcription. SAGA (Spt-Ada-Gcn5 Acetyltransferase) is an evolutionary conserved multisubunit co-activator complex with modular organization. The core module of SAGA constitutes the structural heart, composed of a histone octamer like structure and two additional proteins. The central histone octamer like core structure consists of six histone fold domain (HFD)-containing proteins, forming three HF pairs (TADA1/TAF12, TAF6L/TAF9/9b, and TAF10/SUPT7L) in the mammalian SAGA complexes, to which adds SUPT3H, which contains an intramolecular HF pair. The yeast homologue of SUPT3H, called Spt3, was shown to interact genetically and biochemically with the TATA binding protein (TBP). Here we investigated the role of SUPT3H in human U2OS and mouse embryonic stem (ES) cells. Using immuno-purification coupled mass spectrometry experiments we show that both human and mouse SAGA can assemble without the double HFD-containing SUPT3H. Nascent RNA-seq experiments indicted that in either U2OS or mouse ESCs lacking SUPT3H only a small subset of genes is deregulated. Consequently, in mouse ESCs SUPT3H is not essential for mouse ESC survival, but is required for ESC growth and self-renewal. In addition, TBP recruitment experiments show no major change in TBP accumulation at gene promoters in the absence of SUPT3H in mouse and human cells. Taken together our data suggest in mammalian cells SUPT3H is not required for the assembly of SAGA, general TBP recruitment to genes and cell survival, but it is important for regulating a limited set of genes.
HostingRepository	PRIDE
AnnounceDate	2023-11-14
AnnouncementXML	Submission_2023-11-14_08:53:04.559.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Luc Negroni
SpeciesList	scientific name: Mus musculus (Mouse); NCBI TaxID: 10090; scientific name: Homo sapiens (Human); NCBI TaxID: 9606;
ModificationList	No PTMs are included in the dataset
Instrument	LTQ Orbitrap Elite

Revision	Datetime	Status	ChangeLog Entry
0	2021-06-29 03:04:42	ID requested
1	2022-07-26 07:52:07	announced
⏵ 2	2023-11-14 08:53:05	announced	2023-11-14: Updated project metadata.

Dataset with its publication pending

submitter keyword: Elisabeth Scheer, Didier Devys, Damien Plassard, Elisabeth Lata Bastian Morlet, and László Tora,Veronique Fischer, Stéphane D. Vincent

László Tora
contact affiliation	Institut de Génétique et de Biologie Moléculaire et Cellulaire, 67404 Illkirch, France
contact email	laszlo@igbmc.fr
lab head
Luc Negroni
contact affiliation	CNRS
contact email	luc.negroni@igbmc.fr
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/2022/07/PXD026991

PRIDE project URI

• PRIDE
  1. PXD026991
     1. Label: PRIDE project
     2. Name: SUPT3H-less SAGA coactivator can assemble and function without significantly perturbing RNA polymerase II transcription in mammalian cells