5SXM

WDR5 in complex with MLL Win motif peptidomimetic


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.214 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Targeted Disruption of the Interaction between WD-40 Repeat Protein 5 (WDR5) and Mixed Lineage Leukemia (MLL)/SET1 Family Proteins Specifically Inhibits MLL1 and SETd1A Methyltransferase Complexes.

Alicea-Velazquez, N.L.Shinsky, S.A.Loh, D.M.Lee, J.H.Skalnik, D.G.Cosgrove, M.S.

(2016) J.Biol.Chem. 291: 22357-22372

  • DOI: 10.1074/jbc.M116.752626

  • PubMed Abstract: 
  • MLL1 belongs to the SET1 family of histone H3 lysine 4 (H3K4) methyltransferases, composed of MLL1-4 and SETd1A/B. MLL1 translocations are present in acute leukemias, and mutations in several family members are associated with cancer and developmenta ...

    MLL1 belongs to the SET1 family of histone H3 lysine 4 (H3K4) methyltransferases, composed of MLL1-4 and SETd1A/B. MLL1 translocations are present in acute leukemias, and mutations in several family members are associated with cancer and developmental disorders. MLL1 associates with a subcomplex containing WDR5, RbBP5, ASH2L, and DPY-30 (WRAD), forming the MLL1 core complex required for H3K4 mono- and dimethylation and transcriptional activation. Core complex assembly requires interaction of WDR5 with the MLL1 Win (WDR5 interaction) motif, which is conserved across the SET1 family. Agents that mimic the SET1 family Win motif inhibit the MLL1 core complex and have become an attractive approach for targeting MLL1 in cancers. Like MLL1, other SET1 family members interact with WRAD, but the roles of the Win motif in complex assembly and enzymatic activity remain unexplored. Here, we show that the Win motif is necessary for interaction of WDR5 with all members of the human SET1 family. Mutation of the Win motif-WDR5 interface severely disrupts assembly and activity of MLL1 and SETd1A complexes but only modestly disrupts MLL2/4 and SETd1B complexes without significantly altering enzymatic activity in vitro Notably, in the absence of WDR5, MLL3 interacts with RAD and shows enhanced activity. To further probe the role of the Win motif-WDR5 interaction, we designed a peptidomimetic that binds WDR5 (K d ∼3 nm) and selectively inhibits activity of MLL1 and SETd1A core complexes within the SET1 family. Our results reveal that SET1 family complexes with the weakest Win motif-WDR5 interaction are more susceptible to Win motif-based inhibitors.


    Organizational Affiliation

    From the Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, New York 13210 and cosgrovm@upstate.edu.,From the Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, New York 13210 and.,the Biology Department, School of Science, Indiana University-Purdue University, Indianapolis, Indiana 46202.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
WD repeat-containing protein 5
A, B
315Homo sapiensMutation(s): 0 
Gene Names: WDR5 (BIG3)
Find proteins for P61964 (Homo sapiens)
Go to Gene View: WDR5
Go to UniProtKB:  P61964
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
ACE-ALA-ARG-THR-GLU-VAL-TYR-NH2
D, C
8N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
NH2
Query on NH2
C, D
NON-POLYMERH2 N

--

ACE
Query on ACE
C, D
NON-POLYMERC2 H4 O

--

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.214 
  • Space Group: P 31
  • Diffraction Data DOI: 
    10.15785/SBGRID/447 SBGrid
Unit Cell:
Length (Å)Angle (°)
a = 74.938α = 90.00
b = 74.938β = 90.00
c = 93.544γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data scaling
PHASERphasing
PDB_EXTRACTdata extraction
HKL-2000data reduction
HKL-2000data collection
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Cancer InstituteUnited States5R01CA140522-07

Revision History 

  • Version 1.0: 2016-09-07
    Type: Initial release
  • Version 1.1: 2016-09-14
    Type: Database references
  • Version 1.2: 2016-11-23
    Type: Database references
  • Version 1.3: 2017-09-13
    Type: Advisory, Author supporting evidence, Database references