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| | ==E. coli undecaprenyl pyrophosphate synthase in complex with Triton X-100, magnesium and sulfate== | | ==E. coli undecaprenyl pyrophosphate synthase in complex with Triton X-100, magnesium and sulfate== |
| - | <StructureSection load='1ueh' size='340' side='right' caption='[[1ueh]], [[Resolution|resolution]] 1.73Å' scene=''> | + | <StructureSection load='1ueh' size='340' side='right'caption='[[1ueh]], [[Resolution|resolution]] 1.73Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[1ueh]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1UEH OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1UEH FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[1ueh]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1UEH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1UEH FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=OXN:OXTOXYNOL-10'>OXN</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=UNL:UNKNOWN+LIGAND'>UNL</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]] 1.73Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1jp3|1jp3]]</td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=OXN:OXTOXYNOL-10'>OXN</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=UNL:UNKNOWN+LIGAND'>UNL</scene></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Ditrans,polycis-undecaprenyl-diphosphate_synthase_((2E,6E)-farnesyl-_diphosphate_specific) Ditrans,polycis-undecaprenyl-diphosphate synthase ((2E,6E)-farnesyl- diphosphate specific)], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.5.1.31 2.5.1.31] </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=1ueh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ueh OCA], [https://pdbe.org/1ueh PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ueh RCSB], [https://www.ebi.ac.uk/pdbsum/1ueh PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ueh ProSAT]</span></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=1ueh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ueh OCA], [http://pdbe.org/1ueh PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1ueh RCSB], [http://www.ebi.ac.uk/pdbsum/1ueh PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1ueh ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/UPPS_ECOLI UPPS_ECOLI]] Generates ditrans,octacis-undecaprenyl pyrophosphate (UPP) from isopentenyl pyrophosphate (IPP) and farnesyl diphosphate (FPP). UPP is the precursor of glycosyl carrier lipid in the biosynthesis of bacterial cell wall polysaccharide components such as peptidoglycan and lipopolysaccharide.<ref>PMID:12756244</ref> | + | [https://www.uniprot.org/uniprot/UPPS_ECOLI UPPS_ECOLI] Generates ditrans,octacis-undecaprenyl pyrophosphate (UPP) from isopentenyl pyrophosphate (IPP) and farnesyl diphosphate (FPP). UPP is the precursor of glycosyl carrier lipid in the biosynthesis of bacterial cell wall polysaccharide components such as peptidoglycan and lipopolysaccharide.<ref>PMID:12756244</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Bacillus coli migula 1895]] | + | [[Category: Escherichia coli]] |
| - | [[Category: Chang, S Y]] | + | [[Category: Large Structures]] |
| - | [[Category: Ko, T P]] | + | [[Category: Chang S-Y]] |
| - | [[Category: Liang, P H]] | + | [[Category: Ko T-P]] |
| - | [[Category: Wang, A H.J]] | + | [[Category: Liang P-H]] |
| - | [[Category: Parallel alpha-beta]]
| + | [[Category: Wang AH-J]] |
| - | [[Category: Rossmann-like fold]]
| + | |
| - | [[Category: Transferase]]
| + | |
| Structural highlights
Function
UPPS_ECOLI Generates ditrans,octacis-undecaprenyl pyrophosphate (UPP) from isopentenyl pyrophosphate (IPP) and farnesyl diphosphate (FPP). UPP is the precursor of glycosyl carrier lipid in the biosynthesis of bacterial cell wall polysaccharide components such as peptidoglycan and lipopolysaccharide.[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
Undecaprenyl pyrophosphate synthase (UPPs) catalyzes chain elongation of farnesyl pyrophosphate (FPP) to undecaprenyl pyrophosphate (UPP) via condensation with eight isopentenyl pyrophosphates (IPP). UPPs from Escherichia coli is a dimer, and each subunit consists of 253 amino acid residues. The chain length of the product is modulated by a hydrophobic active site tunnel. In this paper, the crystal structure of E. coli UPPs was refined to 1.73 A resolution, which showed bound sulfate and magnesium ions as well as Triton X-100 molecules. The amino acid residues 72-82, which encompass an essential catalytic loop not seen in the previous apoenzyme structure (Ko, T.-P., Chen, Y. K., Robinson, H., Tsai, P. C., Gao, Y.-G., Chen, A. P.-C., Wang, A. H.-J., and Liang, P.-H. (2001) J. Biol. Chem. 276, 47474-47482), also became visible in one subunit. The sulfate ions suggest locations of the pyrophosphate groups of FPP and IPP in the active site. The Mg2+ is chelated by His-199 and Glu-213 from different subunits and possibly plays a structural rather than catalytic role. However, the metal ion is near the IPP-binding site, and double mutation of His-199 and Glu-213 to alanines showed a remarkable increase of Km value for IPP. Inside the tunnel, one Triton surrounds the top portion of the tunnel, and the other occupies the bottom part. These two Triton molecules may mimic the hydrocarbon moiety of the UPP product in the active site. Kinetic analysis indicated that a high concentration (>1%) of Triton inhibits the enzyme activity.
Catalytic mechanism revealed by the crystal structure of undecaprenyl pyrophosphate synthase in complex with sulfate, magnesium, and triton.,Chang SY, Ko TP, Liang PH, Wang AH J Biol Chem. 2003 Aug 1;278(31):29298-307. Epub 2003 May 19. PMID:12756244[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Chang SY, Ko TP, Liang PH, Wang AH. Catalytic mechanism revealed by the crystal structure of undecaprenyl pyrophosphate synthase in complex with sulfate, magnesium, and triton. J Biol Chem. 2003 Aug 1;278(31):29298-307. Epub 2003 May 19. PMID:12756244 doi:10.1074/jbc.M302687200
- ↑ Chang SY, Ko TP, Liang PH, Wang AH. Catalytic mechanism revealed by the crystal structure of undecaprenyl pyrophosphate synthase in complex with sulfate, magnesium, and triton. J Biol Chem. 2003 Aug 1;278(31):29298-307. Epub 2003 May 19. PMID:12756244 doi:10.1074/jbc.M302687200
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