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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1-2
|
pubmed:dateCreated |
1995-8-3
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pubmed:abstractText |
Paired helical filaments (PHF) characteristic of Alzheimer neurofibrillary lesions are known to contain a modified form of microtubule associated protein tau. These proteins, PHF-tau, differ from normal tau in the extent and the site of phosphorylation. To determine whether PHF-tau, tau proteins from normal adult brains (N-tau), tau proteins from Alzheimer brains not associated with PHF (A-tau), and tau proteins from fetal brains (F-tau) differ in racemization, these proteins were compared for their D-aspartate content. The results demonstrated that PHF-tau contain more D-aspartate than N-tau, A-tau and F-tau. The average percentage D-aspartate for these proteins, after a correction for background, are 4.9%, 2.8%, 1.6%, and 1% for PHF-tau, N-tau, A-tau and F-tau, respectively. It remains to be determined if the increase in D-aspartate is a consequence of PHF formation. It is also unknown if the change in D-aspartate content in PHF-tau is associated with phosphorylation, which alters the susceptibility of tau to proteolysis.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical | |
pubmed:status |
MEDLINE
|
pubmed:month |
Mar
|
pubmed:issn |
0006-8993
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pubmed:author | |
pubmed:issnType |
Print
|
pubmed:day |
27
|
pubmed:volume |
675
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
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pubmed:pagination |
183-9
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:7796127-Alzheimer Disease,
pubmed-meshheading:7796127-Amino Acids,
pubmed-meshheading:7796127-Aspartic Acid,
pubmed-meshheading:7796127-Brain Chemistry,
pubmed-meshheading:7796127-Electrophoresis, Polyacrylamide Gel,
pubmed-meshheading:7796127-Female,
pubmed-meshheading:7796127-Humans,
pubmed-meshheading:7796127-Hydrolysis,
pubmed-meshheading:7796127-Immunoblotting,
pubmed-meshheading:7796127-Neurofibrillary Tangles,
pubmed-meshheading:7796127-Pregnancy,
pubmed-meshheading:7796127-tau Proteins
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pubmed:year |
1995
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pubmed:articleTitle |
Detection of D-aspartate in tau proteins associated with Alzheimer paired helical filaments.
|
pubmed:affiliation |
Department of Pathology, Albert Einstein College of Medicine, Bronx, NY 10461, USA.
|
pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
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