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1tyy

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[[Image:1tyy.gif|left|200px]]
 
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{{Structure
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==Crystal structure of aminoimidazole riboside kinase from Salmonella enterica==
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|PDB= 1tyy |SIZE=350|CAPTION= <scene name='initialview01'>1tyy</scene>, resolution 2.60&Aring;
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<StructureSection load='1tyy' size='340' side='right'caption='[[1tyy]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=K:POTASSIUM ION'>K</scene>
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<table><tr><td colspan='2'>[[1tyy]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Salmonella_enterica_subsp._enterica_serovar_Typhimurium_str._LT2 Salmonella enterica subsp. enterica serovar Typhimurium str. LT2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1TYY OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1TYY FirstGlance]. <br>
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|ACTIVITY= [http://en.wikipedia.org/wiki/Fructokinase Fructokinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.1.4 2.7.1.4]
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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]] 2.6&#8491;</td></tr>
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|GENE= stm4066 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=99287 Salmonella typhimurium LT2])
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
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}}
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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=1tyy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1tyy OCA], [https://pdbe.org/1tyy PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1tyy RCSB], [https://www.ebi.ac.uk/pdbsum/1tyy PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1tyy ProSAT]</span></td></tr>
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</table>
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'''Crystal structure of aminoimidazole riboside kinase from Salmonella enterica'''
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== Function ==
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[https://www.uniprot.org/uniprot/AIRSK_SALTY AIRSK_SALTY] Phosphorylates 5-amino-1-(beta-D-ribosyl)imidazole (AIRs) to form 5-amino-1-(5-phospho-beta-D-ribosyl)imidazole (AIR), an important intermediate in the purine and thiamine biosynthetic pathways (PubMed:12486071). It allows the use of exogenous aminoimidazole riboside (AIRs) to satisfy the cellular requirement for purines and thiamine (PubMed:12486071).<ref>PMID:12486071</ref>
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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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The crystal structures of a Salmonella enterica aminoimidazole riboside (AIRs) kinase, its complex with the substrate AIRs, and its complex with AIRs and an ATP analog were determined at 2.6 angstroms, 2.9 angstroms, and 2.7 angstroms, respectively. The product of the Salmonella-specific gene stm4066, AIRs kinase, is a homodimer with one active site per monomer. The core structure, consisting of an eight-stranded beta sheet flanked by eight alpha helices, indicates that AIRs kinase is a member of the ribokinase superfamily. Unlike ribokinase and adenosine kinase in this superfamily, AIRs kinase does not show significant conformational changes upon substrate binding. The active site is covered by a lid formed by residues 16-28 and 86-100. A comparison of the structure of AIRs kinase with other ribokinase superfamily members suggests that the active site lid and conformational changes that occur upon substrate binding may be advanced features in the evolution of the ribokinase superfamily.
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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/ty/1tyy_consurf.spt"</scriptWhenChecked>
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1TYY is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Salmonella_typhimurium_lt2 Salmonella typhimurium lt2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1TYY 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 of an aminoimidazole riboside kinase from Salmonella enterica: implications for the evolution of the ribokinase superfamily., Zhang Y, Dougherty M, Downs DM, Ealick SE, Structure. 2004 Oct;12(10):1809-21. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15458630 15458630]
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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=1tyy ConSurf].
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[[Category: Fructokinase]]
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<div style="clear:both"></div>
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[[Category: Salmonella typhimurium lt2]]
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== References ==
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[[Category: Single protein]]
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<references/>
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[[Category: Dougherty, M.]]
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__TOC__
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[[Category: Downs, D M.]]
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</StructureSection>
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[[Category: Ealick, S E.]]
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[[Category: Large Structures]]
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[[Category: Zhang, Y.]]
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[[Category: Salmonella enterica subsp. enterica serovar Typhimurium str. LT2]]
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[[Category: K]]
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[[Category: Dougherty M]]
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[[Category: alpha/beta]]
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[[Category: Downs DM]]
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[[Category: ribokinase fold]]
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[[Category: Ealick SE]]
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[[Category: Zhang Y]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 14:25:03 2008''
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Current revision

Crystal structure of aminoimidazole riboside kinase from Salmonella enterica

PDB ID 1tyy

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