Linked Life Data

48887BiochemicalReaction923

Source:http://www.reactome.org/biopax/48887BiochemicalReaction923

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Authored: Akkerman, JW, 2009-06-03, Edited: Jupe, S, 2009-11-03, Reviewed: Harper, MT, 2009-11-02, Reviewed: Jones, ML, 2009-11-02, Reviewed: Poole, AW, 2009-11-02, Stimulation of platelets with collagen-related peptide leads to tyrosine phosphorylation of SLP-76, an adaptor protein with multiple binding domains (Gross et al. 1999). This may be mediated by Syk , analogous to the role of ZAP-70 in phosphorylating T-cell SLP-76 (Bubeck-Wardenberg et al. 1996). The phosphorylated tyrosine residues provide a binding site for the SH2 domains of downstream signalling proteins like Vav, Itk and ADAP (Jordan et al. 2003). Platelets from mice defective in SLP76 do not connect GPVI engagement with downstream signaling (Clements et al. 1999, Judd et al. 2000). GPVI signaling via SLP-76 does not appear to require LAT or GADS (Judd et al. 2002) suggesting that the mechanism is not identical to that of T-cells. LAT and SLP-76 are both required for P-selectin expression and degranulation but may function independently, or rely on proteins not required by T-cells (Jordan et al. 2003).
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Syk activation leads to SLP-76 activation
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