ArticleNucleic acids research2025
Mutations on the surface of HDAC1 reveal molecular determinants of specific complex assembly and their requirement for gene regulation.
Article in Nucleic acids research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Mechanisms coordinating exit from the stem cell state in mammals.Genes & development · 2026Review
- [Potential Mechanisms and Research Advances of HDAC1 in Lung Cancer].Zhongguo fei ai za zhi = Chinese journal of lung cancer · 2026Review
- Stability and interaction defects in the Sin3A-PAH1 αα-hub domain associated with loss-of-function variants.The Journal of biological chemistry · 2026Article
- A de novo missense variant in MIDEAS results in increased deacetylase activity of the MiDAC HDAC complex causing a neurodevelopmental syndrome.Nature communications · 2025Article
- The Allosteric Regulator Inositol Phosphate Dramatically Affects the Efficacy and Selectivity of Inhibitors for Different HDAC Complexes.Journal of the American Chemical Society · 2025Article
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Authors and funding
7 authors.
Funding
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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