Conformational variation between allelic variants of cell-surface ovine prion protein
نویسندگان
چکیده
منابع مشابه
Conformational variation between allelic variants of cell-surface ovine prion protein.
The distribution of prion infectivity and PrPSc between peripheral lymphoid tissues suggests their possible haematogenic spread during the progression of natural scrapie in susceptible sheep. Since ovine PBMCs (peripheral blood mononuclear cells) express PrPC, they have the potential to carry or harbour disease-associated forms of PrP. To detect the possible presence of disease-associated PrP o...
متن کاملCell-surface prion protein interacts with glycosaminoglycans.
We used ELISA and flow cytometry to study the binding of prion protein PrP to glycosaminoglycans (GAGs). We found that recombinant human PrP (rPrP) binds GAGs including chondroitin sulphate A, chondroitin sulphate B, hyaluronic acid, and heparin. rPrP binding to GAGs occurs via the N-terminus, a region known to bind divalent cations. Additionally, rPrP binding to GAGs is enhanced in the presenc...
متن کاملNovel polymorphisms in ovine prion protein gene.
The aim of this study was to identify the PRNP polymorphisms outside the standard codons 136, 154 and 171 in 1110 sheep with no clinical sign of scrapie from all 18 Turkish native sheep breeds and compare our results with published data on ovine PRNP polymorphism from other regions of the world. Among the 22 amino acid polymorphisms and three silent mutations, 10 were novel for ovine PRNP: p.Gl...
متن کاملGenotyping of ovine prion protein gene (PRNP) variants by PCR with melting curve analysis.
BACKGROUND Scrapie is the transmissible spongiform encephalopathy in sheep. Because genetic variants of the ovine PrP gene (PRNP) can be associated with disease risk, the European Union initiated programs to eradicate high-risk PRNP genotypes from sheep livestock. For this purpose, reliable and cost-effective genotyping is needed. METHODS We amplified DNA to cover the 3 risk codons in exon 3 ...
متن کاملConformational conversion of prion protein in prion diseases.
Prion diseases are a group of infectious fatal neurodegenerative diseases. The conformational conversion of a cellular prion protein (PrP(C)) into an abnormal misfolded isoform (PrP(Sc)) is the key event in prion diseases pathology. Under normal conditions, the high-energy barrier separates PrP(C) from PrP(Sc) isoform. However, pathogenic mutations, modifications as well as some cofactors, such...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 2004
ISSN: 0264-6021,1470-8728
DOI: 10.1042/bj20040351