Calcium regulates S-nitrosylation, denitrosylation, and activity of tissue transglutaminase.

@article{Lai2001CalciumRS,
  title={Calcium regulates S-nitrosylation, denitrosylation, and activity of tissue transglutaminase.},
  author={T. Lai and A. Hausladen and T. Slaughter and J. Eu and J. Stamler and C. Greenberg},
  journal={Biochemistry},
  year={2001},
  volume={40 16},
  pages={
          4904-10
        }
}
Nitric oxide (NO) and related molecules play important roles in vascular biology. NO modifies proteins through nitrosylation of free cysteine residues, and such modifications are important in mediating NO's biologic activity. Tissue transglutaminase (tTG) is a sulfhydryl rich protein that is expressed by endothelial cells and secreted into the extracellular matrix (ECM) where it is bound to fibronectin. Tissue TG exhibits a Ca(2+)-dependent transglutaminase activity (TGase) that cross-links… Expand
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