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identifier: 1961125
description:
epitope description:H57, K58, D59, S60, H61, G62, R63, Q165, P166, E167, S168, G169, R170, R171
antigen name:Integrin alpha-IIb
host organism:Homo sapiens
antibody name:PA anti-alphaIIbß3 Ab
aggregation:
instance of dataset
availability:
available
primaryPublications: 22730538
authorizations:
registration not required
accessURL: http://www.iedb.org/reference/1024977
landingPage: http://www.iedb.org/assay/1961125
type:
Literature
publicationVenue:
Blood
dates:
2012
study type: b cell assays
subject species: Homo sapiens
fullName:
Kazunobu Kiyomizu
Hirokazu Kashiwagi
Tsuyoshi Nakazawa
Seiji Tadokoro
Shigenori Honda
Yuzuru Kanakura
Yoshiaki Tomiyama
method:
flow cytometry
name:
Recognition of highly restricted regions in the beta-propeller domain of alphaIIb by platelet-associated anti-alphaIIbbeta3 autoantibodies in primary immune thrombocytopenia.
description:
The epitope residues recognized by the platelet-associated (PA) anti-alphaIIbß3 Abs from ITP patients were determined by analysis of binding to human-mouse chimera alphaIIbß3 molecules with small sections of the N-terminal half of the human molecule exchanged with the corresponding mouse sequence. In addition, mouse alphaIIbß3, with the human sequences W1:1-2 (HKDSHGR) and W2:3-4 (QPESGRR) exchanged in, was recognized similar to WT human alphaIIbß3 by PA anti-alphaIIbß3 Abs from the two patients. Single amino acid replacements S29K, R32S, E136Q and R139G reduced PA Ab binding, indicating these were critical residues.

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