Table 1

SFKs involved in regulating platelet activation

SubfamilySrc kinaseSpeciesInteracting proteinsSubstratesReceptor signaling regulated by SFKsPhenotypes of knockout mouse models
SrcA Src Human26  β3,31  GPIbα,71  SHIP-144  β3,95  FcγRIIA,43  SHIP-144  αIIbβ3,25,31,44  α2β1,96  α6β197  Reduced αIlbβ3-mediated signaling and functional responses21,31  
Mouse21,31  GPIb-IX-V,71  PAR-1, PAR-4,6,83  TP,98  α2A99  
Yes Human16,19  β325  Unknown αIIbβ3,100  PAR-1, PAR-4101   
Fyn Human18  GPVI,50  β3,62  PECAM-160  FcR γ-chain,50,51  PKCδ73  αIIbβ3,62  GPVI-FcR γ-chain,50,51  GPIb-IX-V,75  PAR-1, PAR-4,7,12  P2Y12 Reduced unknown αIIbβ3-mediated signaling and functional responses21,62  
Mouse51  Reduced GPVI-FcR γ-chain–mediated signaling and aggregation/secretion21,51  
Potentiation of PAR-4–mediated aggregation12  
Mild bleeding diathesis62  
Fgr Human20  Unknown Unknown αIIbβ3,21  GPVI-FcR γ-chain21  Marginal reduction in GPVI-mediated aggregation/secretion21  
Mouse21  
SrcB Lyn Human17  GPVI,50  β3,25,45  GPIbα,71  PECAM-1,60  SHIP-145  FcR γ-chain,50,51  SHIP-145  αIIbβ3,25,31,45  GPVI-FcR γ-chain,50,51  PECAM-1,13,60  GPIb-IX-V,102  Increased αIIbβ3-mediated spreading21,45  
Mouse51  PAR-1, PAR-4,7,103  P2Y12, Mpl57  Delayed onset of GPVI-mediated signaling and aggregation/secretion21,51  
Recovery of GPVI-mediated signaling and enhanced aggregation/secretion at later time points21,51  
Reduced GPIb-IX-V–mediated spreading102  
Increased megakaryopoiesis and Mpl signaling57  
Cholesterol sensor in megakaryocyte progenitors58  
Hck Human60  Unknown 
Lck Human19,20  
Blk Not detected21  
Src-related kinases Frk Unknown     
Brk Unknown     
Srm Unknown     
SubfamilySrc kinaseSpeciesInteracting proteinsSubstratesReceptor signaling regulated by SFKsPhenotypes of knockout mouse models
SrcA Src Human26  β3,31  GPIbα,71  SHIP-144  β3,95  FcγRIIA,43  SHIP-144  αIIbβ3,25,31,44  α2β1,96  α6β197  Reduced αIlbβ3-mediated signaling and functional responses21,31  
Mouse21,31  GPIb-IX-V,71  PAR-1, PAR-4,6,83  TP,98  α2A99  
Yes Human16,19  β325  Unknown αIIbβ3,100  PAR-1, PAR-4101   
Fyn Human18  GPVI,50  β3,62  PECAM-160  FcR γ-chain,50,51  PKCδ73  αIIbβ3,62  GPVI-FcR γ-chain,50,51  GPIb-IX-V,75  PAR-1, PAR-4,7,12  P2Y12 Reduced unknown αIIbβ3-mediated signaling and functional responses21,62  
Mouse51  Reduced GPVI-FcR γ-chain–mediated signaling and aggregation/secretion21,51  
Potentiation of PAR-4–mediated aggregation12  
Mild bleeding diathesis62  
Fgr Human20  Unknown Unknown αIIbβ3,21  GPVI-FcR γ-chain21  Marginal reduction in GPVI-mediated aggregation/secretion21  
Mouse21  
SrcB Lyn Human17  GPVI,50  β3,25,45  GPIbα,71  PECAM-1,60  SHIP-145  FcR γ-chain,50,51  SHIP-145  αIIbβ3,25,31,45  GPVI-FcR γ-chain,50,51  PECAM-1,13,60  GPIb-IX-V,102  Increased αIIbβ3-mediated spreading21,45  
Mouse51  PAR-1, PAR-4,7,103  P2Y12, Mpl57  Delayed onset of GPVI-mediated signaling and aggregation/secretion21,51  
Recovery of GPVI-mediated signaling and enhanced aggregation/secretion at later time points21,51  
Reduced GPIb-IX-V–mediated spreading102  
Increased megakaryopoiesis and Mpl signaling57  
Cholesterol sensor in megakaryocyte progenitors58  
Hck Human60  Unknown 
Lck Human19,20  
Blk Not detected21  
Src-related kinases Frk Unknown     
Brk Unknown     
Srm Unknown     
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