6VIL

Crystal structure of mouse BAHCC1 BAH domain in complex with H3K27me3

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.248 
  • R-Value Observed: 0.250 

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This is version 1.4 of the entry. See complete history. 


Literature

BAHCC1 binds H3K27me3 via a conserved BAH module to mediate gene silencing and oncogenesis.

Fan, H., Lu, J., Guo, Y., Li, D., Zhang, Z.M., Tsai, Y.H., Pi, W.C., Ahn, J.H., Gong, W., Xiang, Y., Allison, D.F., Geng, H., He, S., Diao, Y., Chen, W.Y., Strahl, B.D., Cai, L., Song, J., Wang, G.G.

(2020) Nat Genet 52: 1384-1396

  • DOI: 10.1038/s41588-020-00729-3
  • Primary Citation of Related Structures:  
    6VIL

  • PubMed Abstract: 

    • Trimethylated histone H3 lysine 27 (H3K27me3) regulates gene repression, cell-fate determination and differentiation. We report that a conserved bromo-adjacent homology (BAH) module of BAHCC1 (BAHCC1 BAH ) 'recognizes' H3K27me3 specifically and enforces silencing of H3K27me3-demarcated genes in mammalian cells ...

    Trimethylated histone H3 lysine 27 (H3K27me3) regulates gene repression, cell-fate determination and differentiation. We report that a conserved bromo-adjacent homology (BAH) module of BAHCC1 (BAHCC1 BAH ) 'recognizes' H3K27me3 specifically and enforces silencing of H3K27me3-demarcated genes in mammalian cells. Biochemical, structural and integrated chromatin immunoprecipitation-sequencing-based analyses demonstrate that direct readout of H3K27me3 by BAHCC1 is achieved through a hydrophobic trimethyl-L-lysine-binding 'cage' formed by BAHCC1 BAH , mediating colocalization of BAHCC1 and H3K27me3-marked genes. BAHCC1 is highly expressed in human acute leukemia and interacts with transcriptional corepressors. In leukemia, depletion of BAHCC1, or disruption of the BAHCC1 BAH -H3K27me3 interaction, causes derepression of H3K27me3-targeted genes that are involved in tumor suppression and cell differentiation, leading to suppression of oncogenesis. In mice, introduction of a germline mutation at Bahcc1 to disrupt its H3K27me3 engagement causes partial postnatal lethality, supporting a role in development. This study identifies an H3K27me3-directed transduction pathway in mammals that relies on a conserved BAH 'reader'.

    Organizational Affiliation: 

    Curriculum in Genetics and Molecular Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA. greg_wang@med.unc.edu.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
BAH and coiled-coil domain-containing protein 1160Mus musculusMutation(s): 0 
Gene Names: Bahcc1, Kiaa1447
UniProt
Find proteins for Q3UHR0 (Mus musculus)
Explore Q3UHR0 
Go to UniProtKB:  Q3UHR0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ3UHR0
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Histone H3.1C [auth I],
D [auth J],
K [auth L],
L [auth M]		14Homo sapiensMutation(s): 0 
Gene Names: 
UniProt & NIH Common Fund Data Resources
Find proteins for P68431 (Homo sapiens)
Explore P68431 
Go to UniProtKB:  P68431
PHAROS:  P68431
GTEx:  ENSG00000197409 ENSG00000197153 ENSG00000278828 ENSG00000275714 ENSG00000273983 ENSG00000274750 ENSG00000275379 ENSG00000277775 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP68431
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
M3L
Query on M3L		C [auth I],
D [auth J],
K [auth L],
L [auth M]		L-PEPTIDE LINKINGC9 H21 N2 O2LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.248 
  • R-Value Observed: 0.250 
  • Space Group: P 31
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 184.176α = 90
b = 184.176β = 90
c = 70.276γ = 120
Software Package:
Software NamePurpose
HKL-2000data scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-3000data reduction
PHENIXphasing

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2020-01-13 
  • Released Date: 2020-09-16 
    • Deposition Author(s): Song, J., Lu, J.

Revision History  (Full details and data files)

  • Version 1.0: 2020-09-16
    Type: Initial release
  • Version 1.1: 2020-10-07
    Changes: Derived calculations
  • Version 1.2: 2020-11-11
    Changes: Database references
  • Version 1.3: 2020-11-18
    Changes: Database references
  • Version 1.4: 2020-12-16
    Changes: Database references