5TWZ

Structure of Maternal Embryonic Leucine Zipper Kinase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.63 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.223 

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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

MELK is not necessary for the proliferation of basal-like breast cancer cells.

Huang, H.T.Seo, H.S.Zhang, T.Wang, Y.Jiang, B.Li, Q.Buckley, D.L.Nabet, B.Roberts, J.M.Paulk, J.Dastjerdi, S.Winter, G.E.McLauchlan, H.Moran, J.Bradner, J.E.Eck, M.J.Dhe-Paganon, S.Zhao, J.J.Gray, N.S.

(2017) Elife 6

  • DOI: https://doi.org/10.7554/eLife.26693
  • Primary Citation of Related Structures:  
    5TWL, 5TWU, 5TWY, 5TWZ, 5TX3

  • PubMed Abstract: 

    Thorough preclinical target validation is essential for the success of drug discovery efforts. In this study, we combined chemical and genetic perturbants, including the development of a novel selective maternal embryonic leucine zipper kinase (MELK) inhibitor HTH-01-091, CRISPR/Cas9-mediated MELK knockout, a novel chemical-induced protein degradation strategy, RNA interference and CRISPR interference to validate MELK as a therapeutic target in basal-like breast cancers (BBC). In common culture conditions, we found that small molecule inhibition, genetic deletion, or acute depletion of MELK did not significantly affect cellular growth. This discrepancy to previous findings illuminated selectivity issues of the widely used MELK inhibitor OTSSP167, and potential off-target effects of MELK-targeting short hairpins. The different genetic and chemical tools developed here allow for the identification and validation of any causal roles MELK may play in cancer biology, which will be required to guide future MELK drug discovery efforts. Furthermore, our study provides a general framework for preclinical target validation.


  • Organizational Affiliation

    Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Maternal embryonic leucine zipper kinase341Homo sapiensMutation(s): 0 
Gene Names: MELKKIAA0175
EC: 2.7.11.1 (PDB Primary Data), 2.7.10.2 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for Q14680 (Homo sapiens)
Explore Q14680 
Go to UniProtKB:  Q14680
PHAROS:  Q14680
GTEx:  ENSG00000165304 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ14680
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
45R
Query on 45R

Download Ideal Coordinates CCD File 
B [auth A]7-{[2-methoxy-4-(1H-pyrazol-4-yl)benzoyl]amino}-2,3,4,5-tetrahydro-1H-3-benzazepinium
C21 H23 N4 O2
GMZCYCKIXQZORP-UHFFFAOYSA-O
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.63 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.223 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 101.97α = 90
b = 101.97β = 90
c = 62.58γ = 120
Software Package:
Software NamePurpose
Aimlessdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
PHASERphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-11-22
    Type: Initial release
  • Version 1.1: 2019-06-05
    Changes: Data collection, Database references
  • Version 1.2: 2024-03-06
    Changes: Data collection, Database references