Solution Structure of Ship2-Sam

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

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NMR Studies of a Heterotypic Sam-Sam Domain Association: The Interaction between the Lipid Phosphatase Ship2 and the EphA2 Receptor.

Leone, M.Cellitti, J.Pellecchia, M.

(2008) Biochemistry 47: 12721-12728

  • DOI: https://doi.org/10.1021/bi801713f
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Sterile alpha motif (Sam) domains are protein interaction modules that are implicated in many biological processes mainly via homo- and heterodimerization. It has been recently reported that the lipid phosphatase Ship2 regulates endocytosis of the EphA2 receptor, a process that has been investigated as a possible route to reduce tumor malignancy. A heterotypic Sam-Sam domain interaction is mediating this process. Here, we report NMR and ITC (isothermal titration calorimetry) studies on the Sam domain of Ship2 revealing its three-dimensional structure and its possible mode of interaction with the Sam domain from the EphA2 receptor. These studies have also resulted in the identification of a minimal peptide region of Ship2 that retains binding affinity for the Sam domain of the EphA2 receptor. Hence, this peptide and the detection of key structural elements important for EphA2 receptor endocytosis provide possible ways for the development of novel small molecule antagonists with potential anticancer activity.

  • Organizational Affiliation

    Burnham Institute for Medical Research, La Jolla, California, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Phosphatidylinositol-3,4,5-trisphosphate 5-phosphatase 286Homo sapiensMutation(s): 0 
Gene Names: INPPL1SHIP2
UniProt & NIH Common Fund Data Resources
Find proteins for O15357 (Homo sapiens)
Explore O15357 
Go to UniProtKB:  O15357
PHAROS:  O15357
GTEx:  ENSG00000165458 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO15357
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-11-25
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2022-03-16
    Changes: Data collection, Database references, Derived calculations