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Fibrils composed of tau protein are a pathological hallmark of several neurodegenerative disorders including Alzheimer's disease (AD). Here we show that when recombinant tau protein is seeded with paired helical filaments (PHFs) isolated from AD brain, the amyloid formed shares many of the structural features of AD PHFs. In contrast, tau amyloids formed(More)
Analysis of deletion polymorphism of the humanc-fms gene intron 11 (∼425-bp deletion) is of particular interest because of the increased proportion of the heterozygotes among the children born from parents, one of which lacks the deletion-carrying allele, and the other is heterozygous for this allele. In this study, allele and haplotype frequencies of the(More)
Although Huntington's disease is caused by the expansion of a CAG triplet repeat within the context of the 3144-amino acid huntingtin protein (HTT), studies reveal that N-terminal fragments of HTT containing the expanded PolyQ region can be produced by proteolytic processing and/or aberrant splicing. N-terminal HTT fragments are also prevalent in postmortem(More)
Tauopathies encompass a broad family of neurodegenerative diseases, including Alzheimer's disease, which are characterized by the fibrillization of the microtubule-associated tau protein. The normal function of tau is to stabilize and promote the assembly of microtubules in neuronal axons. Sequestration of tau into amyloid fibrils results in destabilization(More)
Bacteriophage enzyme preparations exolysin and endolysin were studied. Exolysin (a phage-associated enzyme) was obtained from tail fraction and endolysin from phage-free cytoplasmic fraction of disintegrated Salmonella enteritidis cells. A new method for purification of these enzymes was developed, and their molecular masses were determined. The main(More)
Analysis of deletion polymorphism of human c-fms gene intron 11 (approximately 425-bp deletion) is of particular interest because of the increased proportion of the deletion heterozygotes among the infants born from the parents, one of which lacks the deletion allele, and the other is heterozygous for the deletion. In this study, allele and haplotype(More)
Many neurodegenerative diseases are associated with deposits of aggregated protein in the brain. The molecular pathways through which soluble proteins misfold to form amyloids and large protein aggregates often include diverse oligomeric species, only some of which progress to the amyloid state. Here we show that prefibrillar huntingtin (HTT) oligomers,(More)
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