Crystal structure of MST2 in complex with XMU-MP-1

Experimental Data Snapshot

  • Resolution: 2.47 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.213 

Starting Model: experimental
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This is version 1.2 of the entry. See complete history


Pharmacological targeting of kinases MST1 and MST2 augments tissue repair and regeneration

Fan, F.He, Z.Kong, L.L.Chen, Q.Yuan, Q.Zhang, S.Ye, J.Liu, H.Sun, X.Geng, J.Yuan, L.Hong, L.Xiao, C.Zhang, W.Sun, X.Li, Y.Wang, P.Huang, L.Wu, X.Ji, Z.Wu, Q.Xia, N.S.Gray, N.S.Chen, L.Yun, C.H.Deng, X.Zhou, D.

(2016) Sci Transl Med 8: 352ra108-352ra108

  • DOI: https://doi.org/10.1126/scitranslmed.aaf2304
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Tissue repair and regenerative medicine address the important medical needs to replace damaged tissue with functional tissue. Most regenerative medicine strategies have focused on delivering biomaterials and cells, yet there is the untapped potential for drug-induced regeneration with good specificity and safety profiles. The Hippo pathway is a key regulator of organ size and regeneration by inhibiting cell proliferation and promoting apoptosis. Kinases MST1 and MST2 (MST1/2), the mammalian Hippo orthologs, are central components of this pathway and are, therefore, strong target candidates for pharmacologically induced tissue regeneration. We report the discovery of a reversible and selective MST1/2 inhibitor, 4-((5,10-dimethyl-6-oxo-6,10-dihydro-5H-pyrimido[5,4-b]thieno[3,2-e][1,4]diazepin-2-yl)amino)benzenesulfonamide (XMU-MP-1), using an enzyme-linked immunosorbent assay-based high-throughput biochemical assay. The cocrystal structure and the structure-activity relationship confirmed that XMU-MP-1 is on-target to MST1/2. XMU-MP-1 blocked MST1/2 kinase activities, thereby activating the downstream effector Yes-associated protein and promoting cell growth. XMU-MP-1 displayed excellent in vivo pharmacokinetics and was able to augment mouse intestinal repair, as well as liver repair and regeneration, in both acute and chronic liver injury mouse models at a dose of 1 to 3 mg/kg via intraperitoneal injection. XMU-MP-1 treatment exhibited substantially greater repopulation rate of human hepatocytes in the Fah-deficient mouse model than in the vehicle-treated control, indicating that XMU-MP-1 treatment might facilitate human liver regeneration. Thus, the pharmacological modulation of MST1/2 kinase activities provides a novel approach to potentiate tissue repair and regeneration, with XMU-MP-1 as the first lead for the development of targeted regenerative therapeutics.

  • Organizational Affiliation

    State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian 361102, China. State-Province Joint Engineering Laboratory of Targeted Drugs from Natural Products, Xiamen University, Xiamen, Fujian 361102, China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Serine/threonine-protein kinase 3
A, B
315Homo sapiensMutation(s): 0 
Gene Names: STK3KRS1MST2
UniProt & NIH Common Fund Data Resources
Find proteins for Q13188 (Homo sapiens)
Explore Q13188 
Go to UniProtKB:  Q13188
PHAROS:  Q13188
GTEx:  ENSG00000104375 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ13188
Sequence Annotations
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
Query on TPO
A, B
Experimental Data & Validation

Experimental Data

  • Resolution: 2.47 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.213 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 89.871α = 90
b = 98.462β = 90
c = 166.771γ = 90
Software Package:
Software NamePurpose
HKL-3000data processing
Cootmodel building

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Basic Research Program of ChinaChina2012CB917202
National Science Foundation of ChinaChina31270769

Revision History  (Full details and data files)

  • Version 1.0: 2016-08-31
    Type: Initial release
  • Version 1.1: 2017-09-27
    Changes: Data collection, Derived calculations
  • Version 1.2: 2023-11-08
    Changes: Data collection, Database references, Refinement description