Cited by 5Histone Deacetylase Inhibitors ResearchGenomics and Chromatin DynamicsEpigenetics and DNA Methylation

Mutations on the surface of HDAC1 reveal molecular determinants of specific complex assembly and their requirement for gene regulation

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Alshehri, Ahmad, Baker, India-May, English, David M, Fairall, Louise, Collins, Mark O, Schwabe, John W R, Cowley, Shaun M·2025·Nucleic Acids Research

Published version of a preprint

Abstract

Histone deacetylase 1 and 2 (HDAC1/2) regulate histone acetylation as catalytic and structural components of six unique multiprotein complex families: SIN3, NuRD, CoREST, MIDAC, MIER, and RERE. Co-immunoprecipitation of HDAC1-Flag followed by mass spectrometry revealed that 92% of HDAC1 in mouse embryonic stem cells resides in three complexes, NuRD (49%), CoREST (28%), and SIN3 (15%). We compared the structures of MTA1:HDAC1 and MIDEAS:HDAC1 to identify critical binding residues on the surface of HDAC1. Surprisingly, a single mutation, Y48E, disrupts binding to all complexes except SIN3. Rescue experiments performed with HDAC1–Y48E in HDAC1/2 double-knockout cells showed that retention of SIN3 binding alone is sufficient for cell viability. Gene expression and histone acetylation patterns were perturbed in both Y48E and a second mutant cell line, HDAC1–E63R, indicating that cells require a full repertoire of the HDAC1/2 complexes to regulate their transcriptome appropriately. Comparative analysis of MTA1/HDAC1 and SIN3B/HDAC2 structures confirmed the differential modes of HDAC1 recruitment, with Y48 interacting with ELM2/SANT domain-containing proteins, but not SIN3. The E63R mutation shows markedly reduced binding to NuRD and MiDAC complexes but retains some CoREST binding. We provide novel molecular insights into the abundance, co-factors and assemblies of this crucial family of chromatin modifying machines.

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Authors
Alshehri, A., Baker, I.-M., English, D. M., Fairall, L., Collins, M. O., Schwabe, J. W. R., & Cowley, S. M.
Affiliations
  • University of Leicester (GB)
  • University of Sheffield (GB)
Corresponding author
  • Schwabe, John W R
  • Cowley, Shaun M
Venue
Nucleic Acids Research
Published
2025-09-05
Volume
53
Issue
17
ISSN
  • 0305-1048 (ISSN-L)
  • 1362-4962
OpenAlex
W4414346486
Cited by
5
References
11
Citations by year
2026: 4 · 2025: 1
FWCI
1.49
Type
journal article
Language
en
Open access
Locations
  • Nucleic Acids Research (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • PubMed Central (publishedVersion, cc-by)
  • White Rose Research Online (University of Leeds, The University of Sheffield, University of York) (acceptedVersion)
Funders
  • Biotechnology and Biological Sciences Research Council
  • Wellcome Trust (222493/Z/21/Z, MR/W00190X/1)
  • BBSRC (BB/P021689/1)
  • MRC (MR/X012220/1, MR/W00190X/1)
  • UKRI
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Histone Deacetylase Inhibitors Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
Keywords
HDAC1, histone deacetylase, protein complex formation, NuRD complex, CoREST complex, MTA1, SANT domain, histone acetylation, chromatin regulation, gene expression, mouse embryonic stem cells, protein-protein interaction
MeSH terms
Mouse Embryonic Stem Cells, Acetylation, Animals, Gene Expression Regulation, Histone Deacetylases, Histones, Humans, Models, Molecular, Mutation, Protein Binding, Repressor Proteins, Trans-Activators, Mice, Mi-2 Nucleosome Remodeling and Deacetylase Complex, Sin3 Histone Deacetylase and Corepressor Complex, Histone Deacetylase 1, Histone Deacetylase 2, Co-Repressor Proteins

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