Title : Beta-actin association with endothelial nitric-oxide synthase modulates nitric oxide and superoxide generation from the enzyme.

Pub. Date : 2010 Feb 12

PMID : 19946124






8 Functional Relationships(s)
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1 Beta-actin association with endothelial nitric-oxide synthase modulates nitric oxide and superoxide generation from the enzyme. Superoxides nitric oxide synthase 3 Homo sapiens
2 Site-directed mutagenesis of the actin-binding domain of eNOS replacing leucine and tryptophan with alanine yielded an eNOS mutant that exhibited reduced eNOS-beta-actin association, decreased NO production, and increased superoxide formation in COS-7 cells. Superoxides nitric oxide synthase 3 Homo sapiens
3 Site-directed mutagenesis of the actin-binding domain of eNOS replacing leucine and tryptophan with alanine yielded an eNOS mutant that exhibited reduced eNOS-beta-actin association, decreased NO production, and increased superoxide formation in COS-7 cells. Superoxides nitric oxide synthase 3 Homo sapiens
4 Site-directed mutagenesis of the actin-binding domain of eNOS replacing leucine and tryptophan with alanine yielded an eNOS mutant that exhibited reduced eNOS-beta-actin association, decreased NO production, and increased superoxide formation in COS-7 cells. Superoxides nitric oxide synthase 3 Homo sapiens
5 Disruption of eNOS-beta-actin interaction in endothelial cells using ABS peptide 326 resulted in decreased NO production, increased superoxide formation, and decreased endothelial monolayer wound repair, which was prevented by PEG-SOD and NO donor NOC-18. Superoxides nitric oxide synthase 3 Homo sapiens
6 Taken together, this novel finding indicates that beta-actin binding to eNOS through residues 326-333 in the eNOS protein results in shifting the enzymatic activity from superoxide formation toward NO production. Superoxides nitric oxide synthase 3 Homo sapiens
7 Taken together, this novel finding indicates that beta-actin binding to eNOS through residues 326-333 in the eNOS protein results in shifting the enzymatic activity from superoxide formation toward NO production. Superoxides nitric oxide synthase 3 Homo sapiens
8 Modulation of NO and superoxide formation from eNOS by beta-actin plays an important role in endothelial function. Superoxides nitric oxide synthase 3 Homo sapiens