1ueh

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{{Seed}}
 
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[[Image:1ueh.png|left|200px]]
 
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==E. coli undecaprenyl pyrophosphate synthase in complex with Triton X-100, magnesium and sulfate==
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The line below this paragraph, containing "STRUCTURE_1ueh", creates the "Structure Box" on the page.
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<StructureSection load='1ueh' size='340' side='right'caption='[[1ueh]], [[Resolution|resolution]] 1.73&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<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>
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or leave the SCENE parameter empty for the default display.
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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]] 1.73&#8491;</td></tr>
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<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>
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{{STRUCTURE_1ueh| PDB=1ueh | SCENE= }}
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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=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>
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</table>
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== Function ==
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[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>
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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/ue/1ueh_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=1ueh 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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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 (&gt;1%) of Triton inhibits the enzyme activity.
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===E. coli undecaprenyl pyrophosphate synthase in complex with Triton X-100, magnesium and sulfate===
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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<ref>PMID:12756244</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 1ueh" style="background-color:#fffaf0;"></div>
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==See Also==
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The line below this paragraph, {{ABSTRACT_PUBMED_12756244}}, adds the Publication Abstract to the page
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*[[Undecaprenyl pyrophosphate synthase|Undecaprenyl pyrophosphate synthase]]
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(as it appears on PubMed at http://www.pubmed.gov), where 12756244 is the PubMed ID number.
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== References ==
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<references/>
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{{ABSTRACT_PUBMED_12756244}}
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__TOC__
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</StructureSection>
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==About this Structure==
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1UEH is a [[Single protein]] structure of sequence from [http://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].
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==Reference==
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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:[http://www.ncbi.nlm.nih.gov/pubmed/12756244 12756244]
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[[Category: Di-trans,poly-cis-decaprenylcistransferase]]
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[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Chang, S Y.]]
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[[Category: Chang S-Y]]
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[[Category: Ko, T P.]]
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[[Category: Ko T-P]]
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[[Category: Liang, P H.]]
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[[Category: Liang P-H]]
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[[Category: Wang, A H.J.]]
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[[Category: Wang AH-J]]
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[[Category: Parallel alpha-beta]]
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[[Category: Rossmann-like fold]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 17:31:11 2008''
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Current revision

E. coli undecaprenyl pyrophosphate synthase in complex with Triton X-100, magnesium and sulfate

PDB ID 1ueh

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