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| - | ==Udp-galactopyranose mutase from Mycobacterium Tuberculosis== | + | ==Udp-galactopyranose mutase from Mycobacterium tuberculosis== |
| - | <StructureSection load='1v0j' size='340' side='right' caption='[[1v0j]], [[Resolution|resolution]] 2.25Å' scene=''> | + | <StructureSection load='1v0j' size='340' side='right'caption='[[1v0j]], [[Resolution|resolution]] 2.25Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[1v0j]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_tuberculosis"_(zopf_1883)_klein_1884 "bacillus tuberculosis" (zopf 1883) klein 1884]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1V0J OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1V0J FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[1v0j]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycobacterium_tuberculosis Mycobacterium tuberculosis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1V0J OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1V0J FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BCN:BICINE'>BCN</scene>, <scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</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]] 2.25Å</td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/UDP-galactopyranose_mutase UDP-galactopyranose mutase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.4.99.9 5.4.99.9] </span></td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BCN:BICINE'>BCN</scene>, <scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</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=1v0j FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1v0j OCA], [http://pdbe.org/1v0j PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1v0j RCSB], [http://www.ebi.ac.uk/pdbsum/1v0j PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1v0j ProSAT]</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=1v0j FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1v0j OCA], [https://pdbe.org/1v0j PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1v0j RCSB], [https://www.ebi.ac.uk/pdbsum/1v0j PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1v0j ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/GLF_MYCTU GLF_MYCTU] Catalyzes the interconversion through a 2-keto intermediate of uridine diphosphogalactopyranose (UDP-GalP) into uridine diphosphogalactofuranose (UDP-GalF) which is a key building block for cell wall construction in Mycobacterium tuberculosis.<ref>PMID:9692181</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | </div> | | </div> |
| | <div class="pdbe-citations 1v0j" style="background-color:#fffaf0;"></div> | | <div class="pdbe-citations 1v0j" style="background-color:#fffaf0;"></div> |
| | + | |
| | + | ==See Also== |
| | + | *[[UDP-galactopyranose mutase|UDP-galactopyranose mutase]] |
| | + | *[[UDP-galactopyranose mutase 3D structures|UDP-galactopyranose mutase 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: UDP-galactopyranose mutase]] | + | [[Category: Large Structures]] |
| - | [[Category: Beis, K]] | + | [[Category: Mycobacterium tuberculosis]] |
| - | [[Category: Naismith, J H]] | + | [[Category: Beis K]] |
| - | [[Category: Flavoprotein]] | + | [[Category: Naismith JH]] |
| - | [[Category: Isomerase]]
| + | |
| - | [[Category: Mutase]]
| + | |
| Structural highlights
Function
GLF_MYCTU Catalyzes the interconversion through a 2-keto intermediate of uridine diphosphogalactopyranose (UDP-GalP) into uridine diphosphogalactofuranose (UDP-GalF) which is a key building block for cell wall construction in Mycobacterium tuberculosis.[1]
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
Uridine diphosphogalactofuranose (UDP-Galf) is the precursor of the d-galactofuranose sugar found in bacterial and parasitic cell walls, including those of many pathogens. UDP-Galf is made from UDP-galactopyranose by the enzyme UDP-galactopyranose mutase. The enzyme requires the reduced FADH- co-factor for activity. The structure of the Mycobacterium tuberculosis mutase with FAD has been determined to 2.25 A. The structures of Klebsiella pneumoniae mutase with FAD and with FADH- bound have been determined to 2.2 A and 2.35 A resolution, respectively. This is the first report of the FADH(-)-containing structure. Two flavin-dependent mechanisms for the enzyme have been proposed, one, which involves a covalent adduct being formed at the flavin and the other based on electron transfer. Using our structural data, we have examined the two mechanisms. The electron transfer mechanism is consistent with the structural data, not surprisingly, since it makes fewer demands on the precise positioning of atoms. A model based on a covalent adduct FAD requires repositioning of the enzyme active site and would appear to require the isoalloxazine ring of FADH- to buckle in a particular way. However, the FADH- structure reveals that the isoalloxazine ring buckles in the opposite sense, this apparently requires the covalent adduct to trigger profound conformational changes in the protein or to buckle the FADH- opposite to that seen in the apo structure.
Crystal structures of Mycobacteria tuberculosis and Klebsiella pneumoniae UDP-galactopyranose mutase in the oxidised state and Klebsiella pneumoniae UDP-galactopyranose mutase in the (active) reduced state.,Beis K, Srikannathasan V, Liu H, Fullerton SW, Bamford VA, Sanders DA, Whitfield C, McNeil MR, Naismith JH J Mol Biol. 2005 May 13;348(4):971-82. PMID:15843027[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Weston A, Stern RJ, Lee RE, Nassau PM, Monsey D, Martin SL, Scherman MS, Besra GS, Duncan K, McNeil MR. Biosynthetic origin of mycobacterial cell wall galactofuranosyl residues. Tuber Lung Dis. 1997;78(2):123-31. PMID:9692181
- ↑ Beis K, Srikannathasan V, Liu H, Fullerton SW, Bamford VA, Sanders DA, Whitfield C, McNeil MR, Naismith JH. Crystal structures of Mycobacteria tuberculosis and Klebsiella pneumoniae UDP-galactopyranose mutase in the oxidised state and Klebsiella pneumoniae UDP-galactopyranose mutase in the (active) reduced state. J Mol Biol. 2005 May 13;348(4):971-82. PMID:15843027 doi:10.1016/j.jmb.2005.02.057
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