Journal
NEUROSCIENCE LETTERS
Volume 408, Issue 3, Pages 165-169Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.neulet.2006.08.008
Keywords
prion disease; V180I mutation; prion protein gene; PRNP
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A valine to isoleucine mutation at residue 180 was identified in a French patient with Creutzfeldt-Jakob disease (CJD). The mutation is located in the close vicinity of one of the two N-glycosylation sites of the cellular prion protein (PrPc). Western blot analysis revealed accumulation in the brain of the pathogenic protemase K-resistant PrP (PrPSc) isoform with the notable absence of the diglycosylated band. The mutant protein expressed in CHO cells was correctly glycosylated, suggesting that the atypical glycosylation pattern of PrPSc was not due to the mutation at position 180. These results suggest that the diglycosylated form of the mutant PrP1801 prevents its conversion into the pathogenic mutant form PrPSc1801. supporting a central role of N-linked glycan chains in the PrP conversion process. (c) 2006 Elsevier Ireland Ltd. All rights reserved.
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