1yoe

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[[Image:1yoe.gif|left|200px]]
 
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==Crystal structure of a the E. coli pyrimidine nucleoside hydrolase YbeK with bound ribose==
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The line below this paragraph, containing "STRUCTURE_1yoe", creates the "Structure Box" on the page.
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<StructureSection load='1yoe' size='340' side='right'caption='[[1yoe]], [[Resolution|resolution]] 1.78&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'>[[1yoe]] is a 1 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=1YOE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1YOE 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]] 1.78&#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=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=RIB:RIBOSE'>RIB</scene></td></tr>
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{{STRUCTURE_1yoe| PDB=1yoe | 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=1yoe FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1yoe OCA], [https://pdbe.org/1yoe PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1yoe RCSB], [https://www.ebi.ac.uk/pdbsum/1yoe PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1yoe ProSAT]</span></td></tr>
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</table>
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'''Crystal structure of a the E. coli pyrimidine nucleoside hydrolase YbeK with bound ribose'''
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== Function ==
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[https://www.uniprot.org/uniprot/RIHA_ECOLI RIHA_ECOLI] Hydrolyzes with equal efficiency cytidine or uridine to ribose and cytosine or uracil, respectively.
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== Evolutionary Conservation ==
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==Overview==
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[[Image:Consurf_key_small.gif|200px|right]]
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Enzymes with nucleoside hydrolase (NH) activity are crucial for salvaging nucleic acid components in purine auxotrophic protozoan parasites, but are also present in prokaryotes and higher eukaryotes. Here we analyze the distribution of genes encoding for putative NH proteins and characterize the yeiK gene product from Escherichia coli as a pyrimidine-specific NH. The crystal structure of YeiK to 1.7 A defines the structural basis for its substrate specificity and identifies residues involved in the catalytic mechanism that differ from both nonspecific and purine-specific NHs. Large differences in the tetrameric quaternary structure compared to nonspecific protozoan NHs are brought forth by minor differences in the interacting surfaces. The first structural and functional characterization of a nonparasitic, pyrimidine nucleoside-specific NH suggests a possible role for these enzymes in the metabolism of tRNA nucleosides. The high catalytic efficiency of YeiK toward 5-fluorouridine could be exploited for suicide gene therapy in cancer treatment.
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Check<jmol>
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<jmolCheckbox>
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==About this Structure==
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/yo/1yoe_consurf.spt"</scriptWhenChecked>
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1YOE 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=1YOE OCA].
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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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==Reference==
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</jmolCheckbox>
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Crystal structure to 1.7 a of the Escherichia coli pyrimidine nucleoside hydrolase YeiK, a novel candidate for cancer gene therapy., Giabbai B, Degano M, Structure. 2004 May;12(5):739-49. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15130467 15130467]
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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=1yoe ConSurf].
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<div style="clear:both"></div>
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__TOC__
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</StructureSection>
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
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[[Category: Ribosylpyrimidine nucleosidase]]
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[[Category: Large Structures]]
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[[Category: Single protein]]
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[[Category: Degano M]]
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[[Category: Degano, M.]]
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[[Category: Muzzolini L]]
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[[Category: Muzzolini, L.]]
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[[Category: Steyaert J]]
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[[Category: Steyaert, J.]]
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[[Category: Versees W]]
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[[Category: Versees, W.]]
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[[Category: Bacterial nucleosidase]]
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[[Category: Enzyme/product complex]]
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[[Category: Pyrimidine nucleoside hydrolase]]
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[[Category: Ribose]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 16:34:48 2008''
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Current revision

Crystal structure of a the E. coli pyrimidine nucleoside hydrolase YbeK with bound ribose

PDB ID 1yoe

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