2MYQ

NMR structure of an Odin-Sam1 fragment


Experimental Data Snapshot

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

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Peptide Fragments of Odin-Sam1: Conformational Analysis and Interaction Studies with EphA2-Sam.

Mercurio, F.A.Di Natale, C.Pirone, L.Scognamiglio, P.L.Marasco, D.Pedone, E.M.Saviano, M.Leone, M.

(2015) Chembiochem 16: 1629-1636

  • DOI: 10.1002/cbic.201500197

  • PubMed Abstract: 
  • Odin is a protein belonging to the ANKS family, and has two tandem Sam domains. The first, Odin-Sam1, binds to the Sam domain of the EphA2 receptor (EphA2-Sam); this interaction could be crucial for the regulation of receptor endocytosis and might ha ...

    Odin is a protein belonging to the ANKS family, and has two tandem Sam domains. The first, Odin-Sam1, binds to the Sam domain of the EphA2 receptor (EphA2-Sam); this interaction could be crucial for the regulation of receptor endocytosis and might have an impact on cancer. Odin-Sam1 associates with EphA2-Sam by adopting a "mid-loop/end-helix" model. In this study three peptide sequences, encompassing the mid-loop interacting portion of Odin-Sam1 and its C-terminal α5 helix, were designed. Their conformational properties were analyzed by CD and NMR. In addition, their abilities to interact with EphA2-Sam were investigated by SPR studies. The peptides adopt a predominantly disordered state in aqueous buffer, but a higher helical content is evident in the presence of the cosolvent trifluoroethanol. Dissociation constants towards EphA2-Sam were in the high micromolar range. The structural findings suggest further routes for the design of potential anti-cancer therapeutics as inhibitors of EphA2-Sam heterotypic interactions.


    Organizational Affiliation

    Cirpeb (Centro Interuniversitario di Ricerca sui Peptidi Bioattivi), Via Mezzocannone 16, 80134, Naples (Italy). marilisa.leone@cnr.it.,Current address: Center for Advanced Biomaterials for Health Care@CRIB, Via Largo Barsanti e Matteucci 53, 80125, Naples (Italy).,Circmsb (Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici), Via C. Ulpiani 27, 70126 Bari (Italy).,Department of Pharmacy, University of Naples "Federico II", Via Mezzocannone 16, 80134, Naples (Italy).,Institute of Biostructures and Bioimaging, National Research Council, Via Mezzocannone 16, 80134, Naples (Italy).,Cirpeb (Centro Interuniversitario di Ricerca sui Peptidi Bioattivi), Via Mezzocannone 16, 80134, Naples (Italy).,Institute of Crystallography, National Research Council, Via Giovanni Amendola 122/O, 70126, Bari (Italy).,Institute of Biostructures and Bioimaging, National Research Council, Via Mezzocannone 16, 80134, Naples (Italy). marilisa.leone@cnr.it.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ankyrin repeat and SAM domain-containing protein 1A
A
45Homo sapiensMutation(s): 0 
Gene Names: ANKS1A (ANKS1, KIAA0229, ODIN)
Find proteins for Q92625 (Homo sapiens)
Go to Gene View: ANKS1A
Go to UniProtKB:  Q92625
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
NH2
Query on NH2
A
NON-POLYMERH2 N

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ACE
Query on ACE
A
NON-POLYMERC2 H4 O

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Experimental Data & Validation

Experimental Data

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

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-07-08
    Type: Initial release
  • Version 1.1: 2015-07-15
    Type: Database references
  • Version 1.2: 2015-08-05
    Type: Database references