2JTD

Skelemin Immunoglobulin C2 like domain 4


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 60 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural insight into the interaction between platelet integrin alphaIIbbeta3 and cytoskeletal protein skelemin.

Deshmukh, L.Tyukhtenko, S.Liu, J.Fox, J.E.Qin, J.Vinogradova, O.

(2007) J Biol Chem 282: 32349-32356

  • DOI: 10.1074/jbc.M704666200
  • Primary Citation of Related Structures:  
    2JTD

  • PubMed Abstract: 
  • Skelemin is a large cytoskeletal protein critical for cell morphology. Previous studies have suggested that its two-tandem immunoglobulin C2-like repeats (SkIgC4 and SkIgC5) are involved in binding to integrin beta3 cytoplasmic tail (CT), providing a ...

    Skelemin is a large cytoskeletal protein critical for cell morphology. Previous studies have suggested that its two-tandem immunoglobulin C2-like repeats (SkIgC4 and SkIgC5) are involved in binding to integrin beta3 cytoplasmic tail (CT), providing a mechanism for skelemin to regulate integrin-mediated signaling and cell spreading. Using NMR spectroscopy, we have studied the molecular details of the skelemin IgC45 interaction with the cytoplasmic face of integrin alphaIIbbeta3. Here, we show that skelemin IgC45 domains form a complex not only with integrin beta3 CT but also, surprisingly, with the integrin alphaIIb CT. Chemical shift mapping experiments demonstrate that both membrane-proximal regions of alphaIIb and beta3 CTs are involved in binding to skelemin. NMR structural determinations, combined with homology modeling, revealed that SkIgC4 and SkIgC5 both exhibited a conserved Ig-fold and both repeats were required for effective binding to and attenuation of alphaIIbbeta3 cytoplasmic complex. These data provide the first molecular insight into how skelemin may interact with integrins and regulate integrin-mediated signaling and cell spreading.


    Organizational Affiliation

    Department of Pharmaceutical Sciences, School of Pharmacy, University of Connecticut at Storrs, Storrs, Connecticut 06269, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Myomesin-1A142Mus musculusMutation(s): 0 
Gene Names: Myom1
Find proteins for Q62234 (Mus musculus)
Explore Q62234 
Go to UniProtKB:  Q62234
NIH Common Fund Data Resources
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 60 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 2JTD Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-09-04
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance