The A beta 3-pyroglutamyl and 11-pyroglutamyl peptides found in senile plaque have greater beta-sheet forming and aggregation propensities in vitro than full-length A beta.

@article{He1999TheAB,
  title={The A beta 3-pyroglutamyl and 11-pyroglutamyl peptides found in senile plaque have greater beta-sheet forming and aggregation propensities in vitro than full-length A beta.},
  author={W He and Colin James Barrow},
  journal={Biochemistry},
  year={1999},
  volume={38 33},
  pages={10871-7}
}
A beta isolated from neuritic plaque and vascular walls of the brains of patients with Alzheimer's disease has been shown to contain significant quantities of A beta peptides which begin at residue 3Glu or 11Glu in the form of pyroglutamyl residues (A beta 3pE and A beta 11pE). To investigate the effects of these N-terminal modifications on the biophysical properties of A beta, peptides A beta 1-40, A beta 3pE-40, A beta 11pE-40, A beta 1-28, A beta 3pE-28, and A beta 11pE-28 were synthesized… CONTINUE READING

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