rdf:type |
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lifeskim:mentions |
|
pubmed:issue |
11
|
pubmed:dateCreated |
2005-10-21
|
pubmed:abstractText |
Binding of antigen to the B cell antigen receptor (BCR) triggers signaling that ultimately leads to B cell activation. Using quantitative fluorescence resonance energy transfer imaging, we provide evidence here that the BCR is a monomer on the surface of resting cells. Binding of multivalent antigen clustered the BCR, resulting in the simultaneous phosphorylation of and a conformational change in the BCR cytoplasmic domains from a closed to an open form. Notably, the open conformation required immunoreceptor tyrosine-activation motif and continuous Src family kinase activity but not binding of the kinase Syk. Thus, the initiation of BCR signaling is a very dynamic process accompanied by reversible conformational changes induced by Src family kinase activity.
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pubmed:commentsCorrections |
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pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Nov
|
pubmed:issn |
1529-2908
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:volume |
6
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
1168-76
|
pubmed:dateRevised |
2011-11-2
|
pubmed:meshHeading |
pubmed-meshheading:16200067-Animals,
pubmed-meshheading:16200067-Antigens,
pubmed-meshheading:16200067-B-Lymphocytes,
pubmed-meshheading:16200067-Enzyme Precursors,
pubmed-meshheading:16200067-Fluorescence Resonance Energy Transfer,
pubmed-meshheading:16200067-Intracellular Signaling Peptides and Proteins,
pubmed-meshheading:16200067-Mice,
pubmed-meshheading:16200067-Phosphorylation,
pubmed-meshheading:16200067-Protein Structure, Tertiary,
pubmed-meshheading:16200067-Protein-Tyrosine Kinases,
pubmed-meshheading:16200067-Receptors, Antigen, B-Cell,
pubmed-meshheading:16200067-Signal Transduction,
pubmed-meshheading:16200067-src-Family Kinases
|
pubmed:year |
2005
|
pubmed:articleTitle |
The initiation of antigen-induced B cell antigen receptor signaling viewed in living cells by fluorescence resonance energy transfer.
|
pubmed:affiliation |
Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland 20852, USA.
|
pubmed:publicationType |
Journal Article,
Research Support, N.I.H., Intramural
|