4GQ6

Human menin in complex with MLL peptide

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.160 
  • R-Value Observed: 0.161 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Structural insights into inhibition of the bivalent menin-MLL interaction by small molecules in leukemia.

Shi, A., Murai, M.J., He, S., Lund, G., Hartley, T., Purohit, T., Reddy, G., Chruszcz, M., Grembecka, J., Cierpicki, T.

(2012) Blood 120: 4461-4469

  • DOI: 10.1182/blood-2012-05-429274
  • Primary Citation of Related Structures:  
    4GQ6, 4GPQ, 4GQ3, 4GQ4

  • PubMed Abstract: 

    • Menin functions as a critical oncogenic cofactor of mixed lineage leukemia (MLL) fusion proteins in the development of acute leukemias, and inhibition of the menin interaction with MLL fusion proteins represents a very promising strategy to reverse their ...

    Menin functions as a critical oncogenic cofactor of mixed lineage leukemia (MLL) fusion proteins in the development of acute leukemias, and inhibition of the menin interaction with MLL fusion proteins represents a very promising strategy to reverse their oncogenic activity. MLL interacts with menin in a bivalent mode involving 2 N-terminal fragments of MLL. In the present study, we reveal the first high-resolution crystal structure of human menin in complex with a small-molecule inhibitor of the menin-MLL interaction, MI-2. The structure shows that the compound binds to the MLL pocket in menin and mimics the key interactions of MLL with menin. Based on the menin-MI-2 structure, we developed MI-2-2, a compound that binds to menin with low nanomolar affinity (K(d) = 22nM) and very effectively disrupts the bivalent protein-protein interaction between menin and MLL. MI-2-2 demonstrated specific and very pronounced activity in MLL leukemia cells, including inhibition of cell proliferation, down-regulation of Hoxa9 expression, and differentiation. Our results provide the rational and essential structural basis to design next generation of inhibitors for effective targeting of the menin-MLL interaction in leukemia and demonstrate a proof of concept that inhibition of complex multivalent protein-protein interactions can be achieved by a small-molecule inhibitor.

    Organizational Affiliation: 

    Department of Pathology, University of Michigan, Ann Arbor, MI, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Menin A489Homo sapiensMutation(s): 1 
Gene Names: MEN1, SCG2
Find proteins for O00255 (Homo sapiens)
Explore O00255 
Go to UniProtKB:  O00255
NIH Common Fund Data Resources
PHAROS:  O00255
GTEx:  ENSG00000133895
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Histone-lysine N-methyltransferase MLL B12Homo sapiensMutation(s): 0 
Gene Names: KMT2A, ALL1, CXXC7, HRX, HTRX, MLL, MLL1, TRX1
EC: 2.1.1.43 (PDB Primary Data), 2.1.1.354 (UniProt)
Find proteins for Q03164 (Homo sapiens)
Explore Q03164 
Go to UniProtKB:  Q03164
NIH Common Fund Data Resources
PHAROS:  Q03164
GTEx:  ENSG00000118058
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.189 
  • R-Value Work: 0.160 
  • R-Value Observed: 0.161 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.601α = 90
b = 80.056β = 90
c = 124.551γ = 90
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-09-19
    Type: Initial release
  • Version 1.1: 2013-01-02
    Changes: Database references
  • Version 1.2: 2014-04-16
    Changes: Other