1M8O

Platelet integrin alfaIIb-beta3 cytoplasmic domain


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with favorable non-bond energy 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A Structural mechanism of integrin alfaiib beta3 "Inside-out" Activation as regulated by its cytoplasmic face.

Vinogradova, O.Velyvis, A.Velyviene, A.Hu, B.Haas, T.A.Plow, E.F.Qin, J.

(2002) Cell 110: 587-597

  • DOI: 10.1016/s0092-8674(02)00906-6
  • Primary Citation of Related Structures:  
    1M8O

  • PubMed Abstract: 
  • Activation of the ligand binding function of integrin heterodimers requires transmission of an "inside-out" signal from their small intracellular segments to their large extracellular domains. The structure of the cytoplasmic domain of a prototypic integ ...

    Activation of the ligand binding function of integrin heterodimers requires transmission of an "inside-out" signal from their small intracellular segments to their large extracellular domains. The structure of the cytoplasmic domain of a prototypic integrin alpha(IIb)beta(3) has been solved by NMR and reveals multiple hydrophobic and electrostatic contacts within the membrane-proximal helices of its alpha and the beta cytoplasmic tails. The interface interactions are disrupted by point mutations or the cytoskeletal protein talin that are known to activate the receptor. These results provide a structural mechanism by which a handshake between the alpha and the beta cytoplasmic tails restrains the integrin in a resting state and unclasping of this interaction triggers the inside-out conformational signal that leads to receptor activation.


    Organizational Affiliation

    Structural Biology Program, Cleveland, OH 44195, USA.



Macromolecules
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
platelet integrin alfaIIb subunit: cytoplasmic domain A20Homo sapiensMutation(s): 0 
Gene Names: ITGA2BGP2BITGAB
Find proteins for P08514 (Homo sapiens)
Explore P08514 
Go to UniProtKB:  P08514
NIH Common Fund Data Resources
PHAROS:  P08514
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
platelet integrin beta3 subunit: cytoplasmic domain B47Homo sapiensMutation(s): 0 
Gene Names: ITGB3GP3A
Find proteins for P05106 (Homo sapiens)
Explore P05106 
Go to UniProtKB:  P05106
NIH Common Fund Data Resources
PHAROS:  P05106
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with favorable non-bond energy 
  • OLDERADO: 1M8O Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-09-18
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance