2kii

NMR structure of the SO2144 H-NOX domain from Shewanella oneidensis in the Fe(II)CO ligation state

spinqualitylabelsall models 2kii Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2kii is a 1 chain structure with sequence from Shewanella oneidensis. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Solution NMR, models Ligands: CMO, HEM Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q8EF49_SHEON Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Heme nitric oxide/oxygen (H-NOX) proteins are found in eukaryotes where they are typically part of a larger protein such as soluble guanylate cyclase and in prokaryotes where they are often found in operons with a histidine kinase, suggesting that H-NOX proteins serve as sensors for NO and O(2) in signaling pathways. The Fe(II)-NO complex of the H-NOX protein from Shewanella oneidensis inhibits the autophosphorylation of the operon-associated histidine kinase, whereas the ligand-free H-NOX has no effect on the kinase. NMR spectroscopy was used to determine the structures of the Fe(II)-CO complex of the S. oneidensis H-NOX and the Fe(II)-CO complex of the H103G H-NOX mutant as a mimic of the ligand-free and kinase-inhibitory Fe(II)-NO H-NOX, respectively. The results provide a molecular glimpse into the ligand-induced conformational changes that may underlie kinase inhibition and the subsequent control of downstream signaling. A structural basis for H-NOX signaling in Shewanella oneidensis by trapping a histidine kinase inhibitory conformation.,Erbil WK, Price MS, Wemmer DE, Marletta MA Proc Natl Acad Sci U S A. 2009 Nov 24;106(47):19753-60. Epub 2009 Nov 16. PMID:19918063 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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