4R7A

Crystal Structure of RBBP4 bound to PHF6 peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.178 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural Basis of Plant Homeodomain Finger 6 (PHF6) Recognition by the Retinoblastoma Binding Protein 4 (RBBP4) Component of the Nucleosome Remodeling and Deacetylase (NuRD) Complex

Liu, Z.Li, F.Zhang, B.Li, S.Wu, J.Shi, Y.

(2015) J Biol Chem 290: 6630-6638

  • DOI: https://doi.org/10.1074/jbc.M114.610196
  • Primary Citation of Related Structures:  
    4R7A

  • PubMed Abstract: 

    The NuRD complex is a conserved transcriptional coregulator that contains both chromatin-remodeling and histone deacetylase activities. Mutations of PHF6 are found in patients with Börjeson-Forssman-Lehmann syndrome, T-cell acute lymphoblastic leukemia, or acute myeloid leukemia. Recently, PHF6 was identified to interact with the NuRD complex, and this interaction is mediated by the RBBP4 component. However, little is known about the molecular basis for the interaction. Here, we present the crystal structure of the complex of the NuRD subunit RBBP4 bound to the PHF6 peptide (residues 162-170). The PHF6 peptide binds to the top surface of the RBBP4 β-propeller. A pair of positively charged residues of the PHF6 peptide insert into the negatively charged pocket of RBBP4, which is critical for the interaction between PHF6 and RBBP4. Corresponding PHF6 mutants impair this interaction in vitro and in vivo. Structural comparison shows that the PHF6-binding pocket overlaps with FOG1 and histone H3 on RBBP4/Nurf55, but it is distinct from the pocket recognizing histone H4, Su(z)12, and MTA1. We further show that the middle disordered region (residues 145-207, containing the RBBP4-binding motif) is sufficient for the transcriptional repression mediated by PHF6 on the GAL4 reporter, and knockdown of RBBP4 diminished the PHF6-mediated repression. Our RBBP4-PHF6 complex structure provides insights into the molecular basis of PHF6-NuRD complex interaction and implicates a role for PHF6 in chromatin structure modulation and gene regulation.


  • Organizational Affiliation

    From the Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230027, China.


Macromolecules

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PHD finger protein 615Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q8IWS0 (Homo sapiens)
Explore Q8IWS0 
Go to UniProtKB:  Q8IWS0
PHAROS:  Q8IWS0
GTEx:  ENSG00000156531 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8IWS0
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Histone-binding protein RBBP4425Homo sapiensMutation(s): 0 
Gene Names: RBBP4RBAP48
UniProt & NIH Common Fund Data Resources
Find proteins for Q09028 (Homo sapiens)
Explore Q09028 
Go to UniProtKB:  Q09028
PHAROS:  Q09028
GTEx:  ENSG00000162521 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ09028
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download Ideal Coordinates CCD File 
C [auth B]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.178 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.63α = 90
b = 87.55β = 90
c = 95.84γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
MOLREPphasing
REFMACrefinement
PDB_EXTRACTdata extraction
ADSCdata collection

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-01-14
    Type: Initial release
  • Version 1.1: 2015-04-08
    Changes: Database references
  • Version 1.2: 2023-11-08
    Changes: Data collection, Database references, Derived calculations, Refinement description