6K39

Structural analysis of AIMP2-DX2 and HSP70 interaction


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.168 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Targeting the interaction of AIMP2-DX2 with HSP70 suppresses cancer development.

Lim, S.Cho, H.Y.Kim, D.G.Roh, Y.Son, S.Y.Mushtaq, A.U.Kim, M.Bhattarai, D.Sivaraman, A.Lee, Y.Lee, J.Yang, W.S.Kim, H.K.Kim, M.H.Lee, K.Jeon, Y.H.Kim, S.

(2020) Nat Chem Biol 16: 31-41

  • DOI: 10.1038/s41589-019-0415-2
  • Primary Citation of Related Structures:  
    6JPV, 6K39

  • PubMed Abstract: 
  • A tumorigenic factor, AIMP2 lacking exon 2 (AIMP2-DX2), is often upregulated in many cancers. However, how its cellular level is determined is not understood. Here, we report heat-shock protein HSP70 as a critical determinant for the level of AIMP2-D ...

    A tumorigenic factor, AIMP2 lacking exon 2 (AIMP2-DX2), is often upregulated in many cancers. However, how its cellular level is determined is not understood. Here, we report heat-shock protein HSP70 as a critical determinant for the level of AIMP2-DX2. Interaction of the two factors was identified by interactome analysis and structurally determined by X-ray crystallography and NMR analyses. HSP70 recognizes the amino (N)-terminal flexible region, as well as the glutathione S-transferase domain of AIMP2-DX2, via its substrate-binding domain, thus blocking the Siah1-dependent ubiquitination of AIMP2-DX2. AIMP2-DX2-induced cell transformation and cancer progression in vivo was further augmented by HSP70. A positive correlation between HSP70 and AIMP2-DX2 levels was shown in various lung cancer cell lines and patient tissues. Chemical intervention in the AIMP2-DX2-HSP70 interaction suppressed cancer cell growth in vitro and in vivo. Thus, this work demonstrates the importance of the interaction between AIMP2-DX2 and HSP70 on tumor progression and its therapeutic potential against cancer.


    Organizational Affiliation

    Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, College of Pharmacy, Seoul National University, Seoul, Republic of Korea. sungkim@snu.ac.kr.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Heat shock 70 kDa protein 1A,Aminoacyl tRNA synthase complex-interacting multifunctional protein 2AB152Homo sapiensMutation(s): 0 
Gene Names: HSPA1AHSP72HSPA1HSX70
Find proteins for P0DMV8 (Homo sapiens)
Explore P0DMV8 
Go to UniProtKB:  P0DMV8
NIH Common Fund Data Resources
PHAROS  P0DMV8
Find proteins for Q13155 (Homo sapiens)
Explore Q13155 
Go to UniProtKB:  Q13155
NIH Common Fund Data Resources
PHAROS  Q13155
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.168 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 56.111α = 90
b = 111.581β = 90
c = 45.571γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Research Foundation (Korea)Korea, Republic OfNRF-2013M3A6A4045160

Revision History 

  • Version 1.0: 2019-10-02
    Type: Initial release
  • Version 1.1: 2019-11-20
    Changes: Database references
  • Version 1.2: 2019-12-18
    Changes: Database references
  • Version 1.3: 2020-01-01
    Changes: Database references