منابع مشابه
Engineering proximal vs. distal heme-NO coordination via dinitrosyl dynamics: implications for NO sensor design.
Proximal vs. distal heme-NO coordination is a novel strategy for selective gas response in heme-based NO-sensors. In the case of Alcaligenes xylosoxidans cytochrome c' (AXCP), formation of a transient distal 6cNO complex is followed by scission of the trans Fe-His bond and conversion to a proximal 5cNO product via a putative dinitrosyl species. Here we show that replacement of the AXCP distal L...
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The heme coordination of ovine prostaglandin H synthase (PGHS) has been characterized by EPR, magnetic circular dichroism, resonance Raman, and optical spectroscopies. The EPR spectrum of ferric PGHS is consistent with an equilibrium mixture of high-spin and low-spin heme species. Both species disappear on reaction of the synthase with hydroperoxides. The high-spin to low-spin interconversion i...
متن کاملNO-synthase inhibition in sepsis.
Thromb Haemost 2006; 95: 591–2 Despite major advances and novel therapeutic approaches in intensive care medicine, sepsis is still a major burden of modern medicine and the leading cause of death in non-coronary intensive care units (1). Sepsis represents a complex disease state with distinctive activation of the inflammation cascade and the coagulation system, resulting in pervasive macroand m...
متن کاملNormal vascular development in mice deficient in endothelial NO synthase: possible role of neuronal NO synthase.
PURPOSE Nitric oxide formation by nitric oxide synthase (NOS) has been implicated in vascular injury and retinal neovascularization during oxygen-induced retinopathy. However, the role of NOS in normal retinal vascular development and growth has not been studied. The purpose of these experiments was to characterize the expression of NOS in relation to vascular development and to determine the e...
متن کاملMicrodialysis-based analysis of interstitial NO in situ: NO synthase-independent NO formation during myocardial ischemia.
OBJECTIVES Nitric oxide (NO) synthesis by NO synthases (NOS) requires oxygen. However, although counterintuitive, NO synthesis is increased in ischemic myocardium. Accordingly, mechanisms independent of the NOS pathway have been suggested to contribute to NO synthesis during ischemia. NO initiates detrimental as well as protective mechanisms in a concentration-dependent manner, thus aggravating...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1994
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.91.22.10512