How the headpiece hinge angle is opened: new insights into the dynamics of integrin activation

@article{PuklinFaucher2006HowTH,
  title={How the headpiece hinge angle is opened: new insights into the dynamics of integrin activation},
  author={Eileen Puklin-Faucher and Mu Gao and Klaus Schulten and Viola Vogel},
  journal={The Journal of Cell Biology},
  year={2006},
  volume={175},
  pages={349 - 360}
}
How the integrin head transitions to the high-affinity conformation is debated. Although experiments link activation with the opening of the hinge angle between the betaA and hybrid domains in the ligand-binding headpiece, this hinge is closed in the liganded alpha(v)beta3 integrin crystal structure. We replaced the RGD peptide ligand of this structure with the 10th type III fibronectin module (FnIII10) and discovered through molecular dynamics (MD) equilibrations that when the conformational… CONTINUE READING

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