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PXD040953-1

PXD040953 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitleUBR5 Forms Ligand-Dependent Complexes on Chromatin to Regulate Nuclear Hormone Receptor Stability
DescriptionNuclear hormone receptors (NRs) are ligand-binding transcription factors that are widely targeted therapeutically. Hormone binding triggers NR activation and their subsequent proteasomal degradation through unknown ligand-dependent ubiquitin ligase machinery. NR degradation is therapeutically relevant. Efficacy of all-trans-retinoic acid (ATRA) for the treatment of acute promyelocytic leukemia requires degradation of the oncogenic fusion between the Promyelocytic Leukemia Protein (PML) with the Retinoic Acid Receptor Alpha (RARA). Here we use CRISPR-based screens to identify the HECT E3 ubiquitin ligase UBR5 as a ligase for PML-RARA and RARA and observe an agonist-dependent association between RARA and UBR5, which occurs directly on chromatin to regulate transcription. We present the cryo-EM structure of full-length human UBR5 and identify a Leu-X-X-Leu-Leu (LxxLL) binding motif that associates with a conserved degron in RARA. A high-resolution crystal structure of the RARA ligand binding domain in complex with this LxxLL motif shows how UBR5 binding is mutually exclusive with nuclear co-activator engagement. We demonstrate that UBR5 utilizes this conserved degron to additionally regulate hormone dependent protein stability for the glucocorticoid, progesterone, and vitamin D receptors. Our work establishes UBR5-driven NR degradation as an integral regulator of transcriptional signaling by nuclear hormones.
HostingRepositoryPRIDE
AnnounceDate2023-07-20
AnnouncementXMLSubmission_2023-07-20_08:24:08.511.xml
DigitalObjectIdentifier
ReviewLevelPeer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportUnsupported dataset by repository
PrimarySubmitterEricFischer
SpeciesList scientific name: Homo sapiens (Human); NCBI TaxID: 9606;
ModificationListiodoacetamide derivatized residue
InstrumenttimsTOF Pro 2
Dataset History
RevisionDatetimeStatusChangeLog Entry
02023-03-17 14:24:39ID requested
12023-07-20 08:24:08announced
Publication List
Dataset with its publication pending
Keyword List
submitter keyword: nuclear receptors,UBR5, degradation, hormones, chromatin
Contact List
EricFischer
contact affiliationDepartment of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA., Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA
contact emailEric_Fischer@DFCI.HARVARD.EDU
lab head
EricFischer
contact affiliationDana-Farber Cancer Institute
contact emaileric_fischer@dfci.harvard.edu
dataset submitter
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Dataset FTP location
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