4d3i

Structure of Bacillus subtilis Nitric Oxide Synthase in complex with 6,6'-((5-(aminomethyl)-1,3-phenylene)bis(ethane-2,1-diyl))bis(4- methylpyridin-2-amine)

spinqualitylabelsall models 4d3i, resolution 2.09Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4d3i is a 1 chain structure with sequence from Bacillus subtilis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.09Å Ligands: 1ET, GOL, HEM, POL Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function NOSO_BACSU Catalyzes the production of nitric oxide. Publication Abstract from PubMed Inhibition of bacterial nitric oxide synthase (bNOS) has the potential to improve the efficacy of antimicrobials used to treat infections by Gram-positive pathogens Staphylococcus aureus and Bacillus anthracis. However, inhibitor specificity toward bNOS over the mammalian NOS (mNOS) isoforms remains a challenge because of the near identical NOS active sites. One key structural difference between the NOS isoforms is the amino acid composition of the pterin cofactor binding site that is adjacent to the NOS active site. Previously, we demonstrated that a NOS inhibitor targeting both the active and pterin sites was potent and functioned as an antimicrobial ( Holden , , Proc. Natl. Acad. Sci. U.S.A. 2013 , 110 , 18127 ). Here we present additional crystal structures, binding analyses, and bacterial killing studies of inhibitors that target both the active and pterin sites of a bNOS and function as antimicrobials. Together, these data provide a framework for continued development of bNOS inhibitors, as each molecule represents an excellent chemical scaffold for the design of isoform selective bNOS inhibitors. Structure-Based Design of Bacterial Nitric Oxide Synthase Inhibitors.,Holden JK, Kang S, Hollingsworth SA, Li H, Lim N, Chen S, Huang H, Xue F, Tang W, Silverman RB, Poulos TL J Med Chem. 2015 Jan 6. PMID:25522110 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Nitric Oxide Synthase 3D structures

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