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Open data
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Basic information
Entry | Database: PDB / ID: 8uiu | ||||||
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Title | Structure of an FMO from Bacillus niacini | ||||||
![]() | Flavin monooxygenase | ||||||
![]() | OXIDOREDUCTASE / flavin monooxygenase | ||||||
Function / homology | Chem-DR9 / FLAVIN-ADENINE DINUCLEOTIDE![]() | ||||||
Biological species | ![]() | ||||||
Method | ![]() ![]() ![]() | ||||||
![]() | Hicks, K.A. / Perry, K. | ||||||
Funding support | ![]()
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![]() | ![]() Title: Structural and Functional Characterization of a Novel Class A Flavin Monooxygenase from . Authors: Brian C Richardson / Zachary R Turlington / Sofia Vaz Ferreira de Macedo / Sara K Phillips / Kay Perry / Savannah G Brancato / Emmalee W Cooke / Jonathan R Gwilt / Morgan A Dasovich / Andrew ...Authors: Brian C Richardson / Zachary R Turlington / Sofia Vaz Ferreira de Macedo / Sara K Phillips / Kay Perry / Savannah G Brancato / Emmalee W Cooke / Jonathan R Gwilt / Morgan A Dasovich / Andrew J Roering / Francis M Rossi / Mark J Snider / Jarrod B French / Katherine A Hicks / ![]() Abstract: A gene cluster responsible for the degradation of nicotinic acid (NA) in has recently been identified, and the structures and functions of the resulting enzymes are currently being evaluated to ...A gene cluster responsible for the degradation of nicotinic acid (NA) in has recently been identified, and the structures and functions of the resulting enzymes are currently being evaluated to establish pathway intermediates. One of the genes within this cluster encodes a flavin monooxygenase (BnFMO) that is hypothesized to catalyze a hydroxylation reaction. Kinetic analyses of the recombinantly purified BnFMO suggest that this enzyme catalyzes the hydroxylation of 2,6-dihydroxynicotinic acid (2,6-DHNA) or 2,6-dihydroxypyridine (2,6-DHP), which is formed spontaneously by the decarboxylation of 2,6-DHNA. To understand the details of this hydroxylation reaction, we determined the structure of BnFMO using a multimodel approach combining protein X-ray crystallography and cryo-electron microscopy (cryo-EM). A liganded BnFMO cryo-EM structure was obtained in the presence of 2,6-DHP, allowing us to make predictions about potential catalytic residues. The structural data demonstrate that BnFMO is trimeric, which is unusual for Class A flavin monooxygenases. In both the electron density and coulomb potential maps, a region at the trimeric interface was observed that was consistent with and modeled as lipid molecules. High-resolution mass spectral analysis suggests that there is a mixture of phosphatidylethanolamine and phosphatidylglycerol lipids present. Together, these data provide insights into the molecular details of the central hydroxylation reaction unique to the aerobic degradation of NA in . | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 267 KB | Display | ![]() |
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PDB format | ![]() | 190.8 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 8urcC ![]() 8urdC C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Unit cell |
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Noncrystallographic symmetry (NCS) | NCS domain:
NCS domain segments: Ens-ID: ens_1
NCS oper:
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Components
#1: Protein | Mass: 52534.094 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #2: Chemical | ChemComp-FAD / | #3: Chemical | Has ligand of interest | Y | Has protein modification | Y | |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 3.06 Å3/Da / Density % sol: 59.76 % |
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Crystal grow | Temperature: 291 K / Method: vapor diffusion, hanging drop / pH: 6.5 / Details: 0.5 M imidazole (pH 6.2-6.5) and 10-12% PEG 3350 / PH range: 6.2-6.5 |
-Data collection
Diffraction | Mean temperature: 183 K / Serial crystal experiment: N |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: DECTRIS EIGER X 16M / Detector: PIXEL / Date: Apr 16, 2022 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.97918 Å / Relative weight: 1 |
Reflection | Resolution: 3.14→68.09 Å / Num. obs: 33392 / % possible obs: 98.88 % / Redundancy: 13.8 % / Biso Wilson estimate: 128.62 Å2 / CC1/2: 0.998 / Rmerge(I) obs: 0.1147 / Net I/σ(I): 16.59 |
Reflection shell | Resolution: 3.14→3.252 Å / Rmerge(I) obs: 2.449 / Num. unique obs: 3261 / CC1/2: 0.377 |
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Processing
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Refinement | Method to determine structure: ![]() Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
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Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.1 Å / Solvent model: FLAT BULK SOLVENT MODEL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 117.46 Å2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 3.14→68.09 Å
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Refine LS restraints |
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Refine LS restraints NCS |
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LS refinement shell |
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