3p80 | pdb_00003p80

Pentaerythritol tetranitrate reductase co-crystal structure containing bound (E)-1-(3'-hydroxyphenyl)-2-nitroethene

spinqualitylabelsall models 3p80, resolution 1.20Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3p80 is a 1 chain structure with sequence from "aerobacter_cloacae"_(jordan_1890)_bergey_et_al._1923 "aerobacter cloacae" (jordan 1890) bergey et al. 1923. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: FMN, P80 Related: 3p74, 3p7y, 3p81, 3p82, 3p84, 3p8i, 3p8j Gene: onr, PETNR ("Aerobacter cloacae" (Jordan 1890) Bergey et al. 1923) Activity: NADPH dehydrogenase, with EC number 1.6.99.1 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed We have conducted a site-specific saturation mutagenesis study of H181 and H184 of flavoprotein pentaerythritol tetranitrate reductase (PETN reductase) to probe the role of these residues in substrate binding and catalysis with a variety of alpha,beta-unsaturated alkenes. Single mutations at these residues were sufficient to dramatically increase the enantiopurity of products formed by reduction of 2-phenyl-1-nitropropene. In addition, many mutants exhibited a switch in reactivity to predominantly catalyse nitro reduction, as opposed to CC reduction. These mutants showed an enhancement in a minor side reaction and formed 2-phenylpropanal oxime from 2-phenyl-1-nitropropene. The multiple binding conformations of hydroxy substituted nitro-olefins in PETN reductase were examined by using both structural and catalytic techniques. These compounds were found to bind in both active and inhibitory complexes; this highlights the plasticity of the active site and the ability of the H181/H184 couple to coordinate with multiple functional groups. These properties demonstrate the potential to use PETN reductase as a scaffold in the development of industrially useful biocatalysts. A Site-Saturated Mutagenesis Study of Pentaerythritol Tetranitrate Reductase Reveals that Residues 181 and 184 Influence Ligand Binding, Stereochemistry and Reactivity.,Toogood HS, Fryszkowska A, Hulley M, Sakuma M, Mansell D, Stephens GM, Gardiner JM, Scrutton NS Chembiochem. 2011 Mar 21;12(5):738-49. doi: 10.1002/cbic.201000662. Epub, 2011 Mar 4. PMID:21374779 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Pentaerythritol tetranitrate reductase

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