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Internal repeats of prion protein and A beta PP, and reciprocal similarity with the amyloid-related proteins.

Abstract
We are currently interested in a group of proteins associated with the dementias characterized by amyloid deposition in the brain: amyloid beta protein precursor (A beta PP) of Alzheimer's disease (AD) and the abnormal isoform of prion protein (PrP) of spongiform encephalopathies such as kuru, Creutzfeldt-Jacob disease (CJD) and Gerstmann-Straussler-Scheinker disease (GSSD). Here we show that both A beta PP and prion protein (PrP) consist of peculiar internal repeats and share regions of sequence similarity. Further analysis revealed that local homology is also shared with the other proteins involved in specific forms of amyloidosis--i.e., the amyloid related proteins (ARP).
AuthorsS Benvenga, A Campenni, A Facchiano
JournalAmyloid : the international journal of experimental and clinical investigation : the official journal of the International Society of Amyloidosis (Amyloid) Vol. 6 Issue 4 Pg. 250-5 (Dec 1999) ISSN: 1350-6129 [Print] England
PMID10611945 (Publication Type: Journal Article)
Chemical References
  • Amyloid beta-Protein Precursor
  • Prions
Topics
  • Amino Acid Sequence
  • Amyloid beta-Protein Precursor (chemistry)
  • Humans
  • Molecular Sequence Data
  • Prion Diseases (metabolism)
  • Prions (chemistry)
  • Repetitive Sequences, Amino Acid
  • Sequence Alignment
  • Sequence Homology, Amino Acid

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