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| - | ==THE CRYSTAL STRUCTURE OF LACTATE OXIDASE== | + | |
| - | <StructureSection load='2j6x' size='340' side='right' caption='[[2j6x]], [[Resolution|resolution]] 2.10Å' scene=''> | + | ==The crystal structure of lactate oxidase== |
| | + | <StructureSection load='2j6x' size='340' side='right'caption='[[2j6x]], [[Resolution|resolution]] 2.10Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2j6x]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Aerococcus_viridans Aerococcus viridans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2J6X OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2J6X FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2j6x]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Aerococcus_viridans Aerococcus viridans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2J6X OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2J6X FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=FMN:FLAVIN+MONONUCLEOTIDE'>FMN</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.1Å</td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Lactate_2-monooxygenase Lactate 2-monooxygenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.13.12.4 1.13.12.4] </span></td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FMN:FLAVIN+MONONUCLEOTIDE'>FMN</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2j6x FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2j6x OCA], [http://pdbe.org/2j6x PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2j6x RCSB], [http://www.ebi.ac.uk/pdbsum/2j6x PDBsum]</span></td></tr> | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2j6x FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2j6x OCA], [https://pdbe.org/2j6x PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2j6x RCSB], [https://www.ebi.ac.uk/pdbsum/2j6x PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2j6x ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/LOX_AERVM LOX_AERVM] Catalyzes the oxidation of (S)-lactate (L-lactate) to pyruvate, with a reduction of O2 to H2O2 (Ref.1, PubMed:27302031, PubMed:25423902, PubMed:2818595, PubMed:8589073, PubMed:26260739). Cannot oxidize D-lactate, glycolate, and D,L-2-hydroxybutanoate (PubMed:2818595). May be involved in the utilization of L-lactate as an energy source for growth (By similarity).[UniProtKB:O33655]<ref>PMID:25423902</ref> <ref>PMID:26260739</ref> <ref>PMID:27302031</ref> <ref>PMID:2818595</ref> <ref>PMID:8589073</ref> [UniProtKB:O33655] |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
| | Check<jmol> | | Check<jmol> |
| | <jmolCheckbox> | | <jmolCheckbox> |
| - | <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/j6/2j6x_consurf.spt"</scriptWhenChecked> | + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/j6/2j6x_consurf.spt"</scriptWhenChecked> |
| | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> |
| | <text>to colour the structure by Evolutionary Conservation</text> | | <text>to colour the structure by Evolutionary Conservation</text> |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Aerococcus viridans]] | | [[Category: Aerococcus viridans]] |
| - | [[Category: Lactate 2-monooxygenase]] | + | [[Category: Large Structures]] |
| - | [[Category: Heikinheimo, P]] | + | [[Category: Heikinheimo P]] |
| - | [[Category: Hough, E]] | + | [[Category: Hough E]] |
| - | [[Category: Leiros, I]] | + | [[Category: Leiros I]] |
| - | [[Category: Oksanen, E]] | + | [[Category: Oksanen E]] |
| - | [[Category: Petersen, S B]] | + | [[Category: Petersen SB]] |
| - | [[Category: Rasmussen, T]] | + | [[Category: Rasmussen T]] |
| - | [[Category: Repo, H]] | + | [[Category: Repo H]] |
| - | [[Category: Wang, E]] | + | [[Category: Wang E]] |
| - | [[Category: Biosensor]]
| + | |
| - | [[Category: Flavoenzyme]]
| + | |
| - | [[Category: Fmn-dependent]]
| + | |
| - | [[Category: Oxidoreductase]]
| + | |
| Structural highlights
Function
LOX_AERVM Catalyzes the oxidation of (S)-lactate (L-lactate) to pyruvate, with a reduction of O2 to H2O2 (Ref.1, PubMed:27302031, PubMed:25423902, PubMed:2818595, PubMed:8589073, PubMed:26260739). Cannot oxidize D-lactate, glycolate, and D,L-2-hydroxybutanoate (PubMed:2818595). May be involved in the utilization of L-lactate as an energy source for growth (By similarity).[UniProtKB:O33655][1] [2] [3] [4] [5] [UniProtKB:O33655]
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
The crystal structure of L-lactate oxidase (LOX) from Aerococcus viridans has been determined at 2.1 A resolution. LOX catalyzes the flavin mononucleotide (FMN) dependent oxidation of lactate to pyruvate and hydrogen peroxide. LOX belongs to the alpha-hydroxy-acid oxidase flavoenzyme family; members of which bind similar substrates and to some extent have conserved catalytic properties and structural motifs. LOX crystallized as two tightly packed tetramers in the asymmetric unit, each having fourfold symmetry. The present structure shows a conserved FMN coordination, but also reveals novel residues involved in substrate binding compared with other family members.
The 2.1 A structure of Aerococcus viridans L-lactate oxidase (LOX).,Leiros I, Wang E, Rasmussen T, Oksanen E, Repo H, Petersen SB, Heikinheimo P, Hough E Acta Crystallogr Sect F Struct Biol Cryst Commun. 2006 Dec 1;62(Pt, 12):1185-90. Epub 2006 Nov 4. PMID:17142893[6]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Stoisser T, Rainer D, Leitgeb S, Wilson DK, Nidetzky B. The Ala -to-Gly substitution in Aerococcus viridans L-lactate oxidase revisited: structural consequences at the catalytic site and effect on reactivity with O and other electron acceptors. FEBS J. 2014 Nov 25. doi: 10.1111/febs.13162. PMID:25423902 doi:http://dx.doi.org/10.1111/febs.13162
- ↑ Stoisser T, Klimacek M, Wilson DK, Nidetzky B. Speeding up the product release: a second-sphere contribution from Tyr191 to the reactivity of L-lactate oxidase revealed in crystallographic and kinetic studies of site-directed variants. FEBS J. 2015 Aug 11. doi: 10.1111/febs.13409. PMID:26260739 doi:http://dx.doi.org/10.1111/febs.13409
- ↑ Stoisser T, Brunsteiner M, Wilson DK, Nidetzky B. Conformational flexibility related to enzyme activity: evidence for a dynamic active-site gatekeeper function of Tyr(215) in Aerococcus viridans lactate oxidase. Sci Rep. 2016 Jun 15;6:27892. doi: 10.1038/srep27892. PMID:27302031 doi:http://dx.doi.org/10.1038/srep27892
- ↑ Duncan JD, Wallis JO, Azari MR. Purification and properties of Aerococcus viridans lactate oxidase. Biochem Biophys Res Commun. 1989 Oct 31;164(2):919-26. PMID:2818595 doi:10.1016/0006-291x(89)91546-5
- ↑ Maeda-Yorita K, Aki K, Sagai H, Misaki H, Massey V. L-lactate oxidase and L-lactate monooxygenase: mechanistic variations on a common structural theme. Biochimie. 1995;77(7-8):631-42. PMID:8589073 doi:10.1016/0300-9084(96)88178-8
- ↑ Leiros I, Wang E, Rasmussen T, Oksanen E, Repo H, Petersen SB, Heikinheimo P, Hough E. The 2.1 A structure of Aerococcus viridans L-lactate oxidase (LOX). Acta Crystallogr Sect F Struct Biol Cryst Commun. 2006 Dec 1;62(Pt, 12):1185-90. Epub 2006 Nov 4. PMID:17142893 doi:10.1107/S1744309106044678
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