4QMG

The Structure of MTDH-SND1 Complex Reveals Novel Cancer-Promoting Interactions

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.192 

wwPDB Validation   3D Report Full Report


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Literature

Structural Insights into the Tumor-Promoting Function of the MTDH-SND1 Complex.

Guo, F., Wan, L., Zheng, A., Stanevich, V., Wei, Y., Satyshur, K.A., Shen, M., Lee, W., Kang, Y., Xing, Y.

(2014) Cell Rep 8: 1704-1713

  • DOI: 10.1016/j.celrep.2014.08.033
  • Primary Citation of Related Structures:  
    4QMG

  • PubMed Abstract: 

    • Metadherin (MTDH) and Staphylococcal nuclease domain containing 1 (SND1) are overexpressed and interact in diverse cancer types. The structural mechanism of their interaction remains unclear. Here, we determined the high-resolution crystal structure of MTDH-SND1 complex, which reveals an 11-residue MTDH peptide motif occupying an extended protein groove between two SN domains (SN1/2), with two MTDH tryptophan residues nestled into two well-defined pockets in SND1 ...

    Metadherin (MTDH) and Staphylococcal nuclease domain containing 1 (SND1) are overexpressed and interact in diverse cancer types. The structural mechanism of their interaction remains unclear. Here, we determined the high-resolution crystal structure of MTDH-SND1 complex, which reveals an 11-residue MTDH peptide motif occupying an extended protein groove between two SN domains (SN1/2), with two MTDH tryptophan residues nestled into two well-defined pockets in SND1. At the opposite side of the MTDH-SND1 binding interface, SND1 possesses long protruding arms and deep surface valleys that are prone to binding with other partners. Despite the simple binding mode, interactions at both tryptophan-binding pockets are important for MTDH and SND1's roles in breast cancer and for SND1 stability under stress. Our study reveals a unique mode of interaction with SN domains that dictates cancer-promoting activity and provides a structural basis for mechanistic understanding of MTDH-SND1-mediated signaling and for exploring therapeutic targeting of this complex.

    Organizational Affiliation: 

    McArdle Laboratory for Cancer Research, Department of Oncology, University of Wisconsin-Madison, School of Medicine and Public Health, Madison, WI 53706, USA. Electronic address: xing@oncology.wisc.edu.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Staphylococcal nuclease domain-containing protein 1A,
C [auth B],
E [auth C],
G [auth D],
I [auth E]		325Homo sapiensMutation(s): 0 
Gene Names: Metadherin (MTDH) and Staphylococcal nuclease domain containing 1 (SND1), SND1, TDRD11
EC: 3.1.31.1
UniProt & NIH Common Fund Data Resources
Find proteins for Q7KZF4 (Homo sapiens)
Explore Q7KZF4 
Go to UniProtKB:  Q7KZF4
PHAROS:  Q7KZF4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ7KZF4
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Protein LYRICB [auth F],
D [auth G],
F [auth H],
H [auth I],
J		43Homo sapiensMutation(s): 0 
Gene Names: AEG1, LYRIC, Metadherin (MTDH), MTDH
UniProt & NIH Common Fund Data Resources
Find proteins for Q86UE4 (Homo sapiens)
Explore Q86UE4 
Go to UniProtKB:  Q86UE4
PHAROS:  Q86UE4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ86UE4
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE		A,
C [auth B],
E [auth C],
G [auth D],
I [auth E]		L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.192 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 121.83α = 90
b = 65.715β = 96.31
c = 135.841γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
PHENIXmodel building
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-10-08
    Type: Initial release