Title : Src kinase activates endothelial nitric-oxide synthase by phosphorylating Tyr-83.

Pub. Date : 2005 Oct 28

PMID : 16123043






11 Functional Relationships(s)
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1 Src kinase activates endothelial nitric-oxide synthase by phosphorylating Tyr-83. Tyrosine nitric oxide synthase 3 Bos taurus
2 The endothelial nitric-oxide synthase (eNOS) is regulated in part by serine/threonine phosphorylation, but eNOS tyrosine phosphorylation is less well understood. Tyrosine nitric oxide synthase 3 Bos taurus
3 In the present study we have examined the tyrosine phosphorylation of eNOS in bovine aortic endothelial cells (BAECs) exposed to oxidant stress. Tyrosine nitric oxide synthase 3 Bos taurus
4 Hydrogen peroxide and pervanadate (PV) treatment stimulates eNOS tyrosine phosphorylation in BAECs. Tyrosine nitric oxide synthase 3 Bos taurus
5 Domain mapping and site-directed mutagenesis studies in COS-7 cells transfected with either eNOS alone and then treated with PV or cotransfected with eNOS and constitutively active v-Src identified Tyr-83 (bovine sequence) as the major eNOS tyrosine phosphorylation site. Tyrosine nitric oxide synthase 3 Bos taurus
6 Domain mapping and site-directed mutagenesis studies in COS-7 cells transfected with either eNOS alone and then treated with PV or cotransfected with eNOS and constitutively active v-Src identified Tyr-83 (bovine sequence) as the major eNOS tyrosine phosphorylation site. Tyrosine nitric oxide synthase 3 Bos taurus
7 Domain mapping and site-directed mutagenesis studies in COS-7 cells transfected with either eNOS alone and then treated with PV or cotransfected with eNOS and constitutively active v-Src identified Tyr-83 (bovine sequence) as the major eNOS tyrosine phosphorylation site. Tyrosine nitric oxide synthase 3 Bos taurus
8 Taken together, these data indicate that Src-mediated tyrosine phosphorylation of eNOS at Tyr-83 modulates eNOS activity in endothelial cells. Tyrosine nitric oxide synthase 3 Bos taurus
9 Taken together, these data indicate that Src-mediated tyrosine phosphorylation of eNOS at Tyr-83 modulates eNOS activity in endothelial cells. Tyrosine nitric oxide synthase 3 Bos taurus
10 Taken together, these data indicate that Src-mediated tyrosine phosphorylation of eNOS at Tyr-83 modulates eNOS activity in endothelial cells. Tyrosine nitric oxide synthase 3 Bos taurus
11 Taken together, these data indicate that Src-mediated tyrosine phosphorylation of eNOS at Tyr-83 modulates eNOS activity in endothelial cells. Tyrosine nitric oxide synthase 3 Bos taurus