PXD036436

PXD036436 is an original dataset announced via ProteomeXchange.

Title	BAHCC1 binds H4K20me1 to facilitate the MCM complex loading for DNA replication
Description	Methylation of histone H4 lysine 20 (H4K20), such as H4K20 mono-methylation (H4K20me1), regulates the biological processes of DNA replication, cell cycle progression, and DNA damage repair1-4. Whereas H4K20me1 is knowingly written by SET85,6 (also known as PR-Set7) and erased by PHF87 (also known as KDM7B), the mechanism underlying H4K20me1-mediated regulation of DNA replication remains murky. Here, we report that a conserved tandem Tudor domain of BAHCC1 (BAHCC1TTD) specifically reads H4K20me1. Our biochemical, structural and cellular analyses demonstrated that the recognition of H4K20me1 by BAHCC1TTD facilitates the BAHCC1 recruitment onto the replication origins, where BAHCC1 interacts and recruits components of Minichromosome Maintenance (MCM) complex, a critical partner machinery of Origin Replication Complex (ORC) for mediating DNA replication8,9. Combined actions of the H4K20me1-reading BAHCC1 and the H4K20me2-reading ORC ensure optimal genomic loading of MCM proteins. Depletion of BAHCC1, or disruption of BAHCC1TTD:H4K20me1 interaction, affected H4K20me1 homeostasis and MCM complex loading, leading to impaired DNA replication and defective cell cycle progression. Together, this study identifies a conserved BAHCC1TTD as an effector linking H4K20me1 to MCM recruitment for efficient DNA replication.
HostingRepository	PRIDE
AnnounceDate	2025-06-06
AnnouncementXML	Submission_2025-06-06_05:01:53.551.xml
DigitalObjectIdentifier	https://dx.doi.org/10.6019/PXD036436
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Supported dataset by repository
PrimarySubmitter	Stephanie Byrum
SpeciesList	scientific name: Homo sapiens (Human); NCBI TaxID: 9606;
ModificationList	monohydroxylated residue; iodoacetamide derivatized residue
Instrument	Orbitrap Exploris 480

Revision	Datetime	Status	ChangeLog Entry
0	2022-08-31 11:27:53	ID requested
⏵ 1	2025-06-06 05:01:53	announced

10.6019/PXD036436;

submitter keyword: bioID, gelc,human, NSAF

Gang Greg Wang
contact affiliation	1Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA 2Department of Biochemistry and Biophysics, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA 5Curriculum in Genetics and Molecular Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA 8Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
contact email	greg_wang@med.unc.edu
lab head
Stephanie Byrum
contact affiliation	UAMS
contact email	sbyrum@uams.edu
dataset submitter

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PRIDE project URI

• PRIDE
  1. PXD036436
     1. Label: PRIDE project
     2. Name: BAHCC1 binds H4K20me1 to facilitate the MCM complex loading for DNA replication