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Protein Crystallization for X-ray Crystallography
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Protein X-ray crystallography of the 14-3-3ζ/SOS1 complex

Alice Ballone1, Federica Centorrino1, Madita Wolter1

  • 1Department of Biomedical Engineering, Eindhoven University of Technology, Laboratory of Chemical Biology, Eindhoven, 5600 MB, The Netherlands.

Data in Brief
|September 20, 2018
PubMed

Insights

This study reveals the 3D structure of a key protein complex involving 14-3-3ζ and Son of sevenless homolog 1 (SOS1). Understanding this complex is crucial for targeting aberrant Ras-MAPK signaling in diseases like pancreatic cancer.

Area of Science:

  • Biochemistry
  • Structural Biology
  • Molecular Oncology

Background:

  • Ras-MAPK signaling is vital for cell function, and its dysregulation drives cancers like pancreatic cancer.
  • The 14-3-3 protein and Son of sevenless homolog 1 (SOS1) form a complex crucial for regulating Ras-MAPK signaling.
  • Aberrant Ras-MAPK signaling contributes to uncontrolled cell proliferation and differentiation.

Purpose of the Study:

  • To elucidate the 3D structure of the 14-3-3ζ dimer in complex with a specific peptide from SOS1 (SOS1pS1161).
  • To provide detailed insights into the crystallization process of this protein complex.
  • To offer structural data relevant to understanding aberrant Ras-MAPK signaling.

Main Methods:

  • X-ray crystallography was employed to determine the 3D structure.
  • Crystallization protocols for the 14-3-3ζ/SOS1pS1161 complex were detailed.
  • The resulting crystal structure was deposited in the Protein Data Bank (PDB ID: 6F08).

Main Results:

  • The 3D crystal structure of the 14-3-3ζ dimer bound to the 13-mer SOS1pS1161 peptide was determined.
  • Detailed information regarding the crystallization process is provided.
  • The structure offers insights into the interaction interface between 14-3-3ζ and SOS1.

Conclusions:

  • The determined structure provides a detailed molecular understanding of the 14-3-3ζ and SOS1 interaction.
  • This structural information can aid in the development of targeted therapies for cancers driven by Ras-MAPK pathway aberrations.
  • The data facilitates further research into the role of this complex in cellular signaling.

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