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Title: KDM2B Recruitment of the Polycomb Group Complex, PRC1.1, Requires Cooperation between PCGF1 and BCORL1

Journal Article · · Structure

KDM2B recruits H2A-ubiquitinating activity of a non-canonical Polycomb Repression Complex 1 (PRC1.1) to CpG islands, facilitating gene repression. We investigated the molecular basis of recruitment using in vitro assembly assays to identify minimal components, subcomplexes, and domains required for recruitment. A minimal four-component PRC1.1 complex can be assembled by combining two separately isolated subcomplexes: the DNA-binding KDM2B/SKP1 heterodimer and the heterodimer of BCORL1 and PCGF1, a core component of PRC1.1. The crystal structure of the KDM2B/SKP1/BCORL1/PCGF1 complex illustrates the crucial role played by the PCGF1/BCORL1 heterodimer. The BCORL1 PUFD domain positions residues preceding the RAWUL domain of PCGF1 to create an extended interface for interaction with KDM2B, which is unique to the PCGF1-containing PRC1.1 complex. The structure also suggests how KDM2B might simultaneously function in PRC1.1 and an SCF ubiquitin ligase complex and the possible molecular consequences of BCOR PUFD internal tandem duplications found in pediatric kidney and brain tumors.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE; National Institutes of Health (NIH)
Contributing Organization:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Grant/Contract Number:
AC02–06CH11357
OSTI ID:
1313242
Alternate ID(s):
OSTI ID: 1328788
Journal Information:
Structure, Journal Name: Structure Vol. 24 Journal Issue: 10; ISSN 0969-2126
Publisher:
ElsevierCopyright Statement
Country of Publication:
United Kingdom
Language:
English
Citation Metrics:
Cited by: 32 works
Citation information provided by
Web of Science

References (26)

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Cited By (6)

BCOR involvement in cancer journal May 2019
New advances in the molecular classification of pediatric mesenchymal tumors journal October 2018
Variants in the transcriptional corepressor BCORL1 are associated with an X‐linked disorder of intellectual disability, dysmorphic features, and behavioral abnormalities journal April 2019
KDM2B in polycomb repressive complex 1.1 functions as a tumor suppressor in the initiation of T-cell leukemogenesis journal August 2019
PARP1-dependent recruitment of the FBXL10-RNF68-RNF2 ubiquitin ligase to sites of DNA damage controls H2A.Z loading journal July 2018
Evolution and conservation of polycomb repressive complex 1 core components and putative associated factors in the green lineage journal June 2019

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