3b9n

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[[Image:3b9n.jpg|left|200px]]<br /><applet load="3b9n" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="3b9n, resolution 2.7&Aring;" />
 
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'''Crystal structure of long-chain alkane monooxygenase (LadA)'''<br />
 
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==Overview==
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==Crystal structure of long-chain alkane monooxygenase (LadA)==
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LadA, a long-chain alkane monooxygenase, utilizes a terminal oxidation, pathway for the conversion of long-chain alkanes (up to at least C(36)) to, corresponding primary alcohols in thermophilic bacillus Geobacillus, thermodenitrificans NG80-2. Here, we report the first structure of the, long-chain alkane hydroxylase, LadA, and its complex with the flavin, mononucleotide (FMN) coenzyme. LadA is characterized as a new member of, the SsuD subfamily of the bacterial luciferase family via a surprising, structural relationship. The LadA:FMN binary complex structure and a, LadA:FMN:alkane model reveal a hydrophobic cavity that has dual roles: to, provide a hydrogen-bond donor (His138) for catalysis and to create a, solvent-free environment in which to stabilize the C4a-hydroperoxyflavin, intermediate. Consequently, LadA should catalyze the conversion of, long-chain alkanes via the acknowledged flavoprotein monooxygenase, mechanism. This finding suggests that the ability of LadA to catalyze the, degradation of long-chain alkanes is determined by the binding mode of the, long-chain alkane substrates. The LadA structure opens a rational, perspective to explore and alter the substrate binding site of LadA, with, potential biotechnological applications in areas such as petroleum, exploration and treatment of environmental oil pollution.
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<StructureSection load='3b9n' size='340' side='right'caption='[[3b9n]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[3b9n]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Geobacillus_thermodenitrificans Geobacillus thermodenitrificans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3B9N OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3B9N FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.7&#8491;</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3b9n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3b9n OCA], [https://pdbe.org/3b9n PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3b9n RCSB], [https://www.ebi.ac.uk/pdbsum/3b9n PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3b9n ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/LADA_GEOTN LADA_GEOTN] Involved in the degradation of long-chain alkanes (PubMed:17372208, PubMed:22526792). Converts alkanes ranging from C(15) to C(36) into their corresponding primary alcohols (PubMed:17372208).<ref>PMID:17372208</ref> <ref>PMID:22526792</ref>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/b9/3b9n_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=3b9n ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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LadA, a long-chain alkane monooxygenase, utilizes a terminal oxidation pathway for the conversion of long-chain alkanes (up to at least C(36)) to corresponding primary alcohols in thermophilic bacillus Geobacillus thermodenitrificans NG80-2. Here, we report the first structure of the long-chain alkane hydroxylase, LadA, and its complex with the flavin mononucleotide (FMN) coenzyme. LadA is characterized as a new member of the SsuD subfamily of the bacterial luciferase family via a surprising structural relationship. The LadA:FMN binary complex structure and a LadA:FMN:alkane model reveal a hydrophobic cavity that has dual roles: to provide a hydrogen-bond donor (His138) for catalysis and to create a solvent-free environment in which to stabilize the C4a-hydroperoxyflavin intermediate. Consequently, LadA should catalyze the conversion of long-chain alkanes via the acknowledged flavoprotein monooxygenase mechanism. This finding suggests that the ability of LadA to catalyze the degradation of long-chain alkanes is determined by the binding mode of the long-chain alkane substrates. The LadA structure opens a rational perspective to explore and alter the substrate binding site of LadA, with potential biotechnological applications in areas such as petroleum exploration and treatment of environmental oil pollution.
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==About this Structure==
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Crystal structure of long-chain alkane monooxygenase (LadA) in complex with coenzyme FMN: unveiling the long-chain alkane hydroxylase.,Li L, Liu X, Yang W, Xu F, Wang W, Feng L, Bartlam M, Wang L, Rao Z J Mol Biol. 2008 Feb 15;376(2):453-65. Epub 2007 Nov 28. PMID:18164311<ref>PMID:18164311</ref>
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3B9N is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Geobacillus_thermodenitrificans Geobacillus thermodenitrificans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3B9N OCA].
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==Reference==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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Crystal Structure of Long-Chain Alkane Monooxygenase (LadA) in Complex with Coenzyme FMN: Unveiling the Long-Chain Alkane Hydroxylase., Li L, Liu X, Yang W, Xu F, Wang W, Feng L, Bartlam M, Wang L, Rao Z, J Mol Biol. 2007 Nov 28;. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=18164311 18164311]
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</div>
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<div class="pdbe-citations 3b9n" style="background-color:#fffaf0;"></div>
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== References ==
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<references/>
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__TOC__
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</StructureSection>
[[Category: Geobacillus thermodenitrificans]]
[[Category: Geobacillus thermodenitrificans]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Bartlam, M.]]
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[[Category: Bartlam M]]
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[[Category: Li, L.]]
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[[Category: Li L]]
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[[Category: Rao, Z.]]
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[[Category: Rao Z]]
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[[Category: Xu, F.]]
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[[Category: Xu F]]
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[[Category: Yang, W.]]
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[[Category: Yang W]]
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[[Category: alkane hydroxylase]]
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[[Category: crystal structure]]
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[[Category: geobacillus thermodenitrificans]]
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[[Category: lada]]
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[[Category: monooxygenase]]
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[[Category: oxidoreductase]]
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[[Category: plasmid]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Feb 13 08:18:48 2008''
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Current revision

Crystal structure of long-chain alkane monooxygenase (LadA)

PDB ID 3b9n

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