1nos: Difference between revisions

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{{STRUCTURE_1nos|  PDB=1nos  |  SCENE=  }}  
{{STRUCTURE_1nos|  PDB=1nos  |  SCENE=  }}  


'''MURINE INDUCIBLE NITRIC OXIDE SYNTHASE OXYGENASE DOMAIN (DELTA 114), IMIDAZOLE COMPLEX'''
===MURINE INDUCIBLE NITRIC OXIDE SYNTHASE OXYGENASE DOMAIN (DELTA 114), IMIDAZOLE COMPLEX===




==Overview==
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The nitric oxide synthase oxygenase domain (NOSox) oxidizes arginine to synthesize the cellular signal and defensive cytotoxin nitric oxide (NO). Crystal structures determined for cytokine-inducible NOSox reveal an unusual fold and heme environment for stabilization of activated oxygen intermediates key for catalysis. A winged beta sheet engenders a curved alpha-beta domain resembling a baseball catcher's mitt with heme clasped in the palm. The location of exposed hydrophobic residues and the results of mutational analysis place the dimer interface adjacent to the heme-binding pocket. Juxtaposed hydrophobic O2- and polar L-arginine-binding sites occupied by imidazole and aminoguanidine, respectively, provide a template for designing dual-function inhibitors and imply substrate-assisted catalysis.
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==About this Structure==
==About this Structure==
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[[Category: No]]
[[Category: No]]
[[Category: Oxidoreductase]]
[[Category: Oxidoreductase]]
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