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rdf:type
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Description
| - Activation of the B cell antigen receptor triggers phosphorylation of cytoplasmic and transmembrane adaptor proteins such as SLP-65 and NTAL, respectively. Specific phosphoacceptor sites in SLP-65 serve as docking sites for Ca(2+)-mobilizing enzymes Btk and PLC-gamma2. Phosphorylated NTAL recruits the Grb2 linker, but downstream signaling cascades are unclear. We now show that receptor-induced tyrosine phosphorylation of NTAL and concomitant Grb2 complex formation critically modulate the Ca(2+) response without affecting SLP-65 and PLC-gamma2 phosphorylation. Grb2 turned out to play a negative regulatory role, which appears to be eliminated upon binding to NTAL. This allows for a sustained release of intracellular Ca(2+) and is mandatory for subsequent entry of Ca(2+) from extracellular sources. Thus, elevation of Ca(2+) is regulated by at least two signaling modules, the B cell-specific Ca(2+) initiation complex comprising SLP-65, Btk, and PLC-gamma2 and the more ubiquitously expressed NTAL/Grb2 c...
- Activation of the B cell antigen receptor triggers phosphorylation of cytoplasmic and transmembrane adaptor proteins such as SLP-65 and NTAL, respectively. Specific phosphoacceptor sites in SLP-65 serve as docking sites for Ca(2+)-mobilizing enzymes Btk and PLC-gamma2. Phosphorylated NTAL recruits the Grb2 linker, but downstream signaling cascades are unclear. We now show that receptor-induced tyrosine phosphorylation of NTAL and concomitant Grb2 complex formation critically modulate the Ca(2+) response without affecting SLP-65 and PLC-gamma2 phosphorylation. Grb2 turned out to play a negative regulatory role, which appears to be eliminated upon binding to NTAL. This allows for a sustained release of intracellular Ca(2+) and is mandatory for subsequent entry of Ca(2+) from extracellular sources. Thus, elevation of Ca(2+) is regulated by at least two signaling modules, the B cell-specific Ca(2+) initiation complex comprising SLP-65, Btk, and PLC-gamma2 and the more ubiquitously expressed NTAL/Grb2 c... (en)
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Title
| - Grb2 and the non-T cell activation linker NTAL constitute a Ca(2+)-regulating signal circuit in B lymphocytes
- Grb2 and the non-T cell activation linker NTAL constitute a Ca(2+)-regulating signal circuit in B lymphocytes (en)
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skos:prefLabel
| - Grb2 and the non-T cell activation linker NTAL constitute a Ca(2+)-regulating signal circuit in B lymphocytes
- Grb2 and the non-T cell activation linker NTAL constitute a Ca(2+)-regulating signal circuit in B lymphocytes (en)
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skos:notation
| - RIV/68378050:_____/04:00105347!RIV10-AV0-68378050
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
| - P(LN00A026), Z(AV0Z5052915)
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/68378050:_____/04:00105347
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - NTAL; Grb2; lymphocyte (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Hořejší, Václav
- Frey, J.
- Schraven, B.
- Wienands, J.
- Engelke, M.
- Hamm-Baarke, A.
- Kurosaki, T.
- Stork, B.
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http://linked.open...n/vavai/riv/zamer
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issn
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number of pages
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