1thf

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[[Image:1thf.jpg|left|200px]]<br /><applet load="1thf" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="1thf, resolution 1.45&Aring;" />
 
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'''CYCLASE SUBUNIT OF IMIDAZOLEGLYCEROLPHOSPHATE SYNTHASE FROM THERMOTOGA MARITIMA'''<br />
 
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==Overview==
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==CYCLASE SUBUNIT OF IMIDAZOLEGLYCEROLPHOSPHATE SYNTHASE FROM THERMOTOGA MARITIMA==
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The atomic structures of two proteins in the histidine biosynthesis pathway consist of beta/alpha barrels with a twofold repeat pattern. It is likely that these proteins evolved by twofold gene duplication and gene fusion from a common half-barrel ancestor. These ancestral domains are not visible as independent domains in the extant proteins but can be inferred from a combination of sequence and structural analysis. The detection of subdomain structures may be useful in efforts to search genome sequences for functionally and structurally related proteins.
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<StructureSection load='1thf' size='340' side='right'caption='[[1thf]], [[Resolution|resolution]] 1.45&Aring;' scene=''>
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== Structural highlights ==
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==About this Structure==
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<table><tr><td colspan='2'>[[1thf]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermotoga_maritima Thermotoga maritima]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1THF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1THF FirstGlance]. <br>
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1THF is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Thermotoga_maritima Thermotoga maritima] with <scene name='pdbligand=PO4:'>PO4</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1THF OCA].
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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]] 1.45&#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=PO4:PHOSPHATE+ION'>PO4</scene></td></tr>
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==Reference==
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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=1thf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1thf OCA], [https://pdbe.org/1thf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1thf RCSB], [https://www.ebi.ac.uk/pdbsum/1thf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1thf ProSAT]</span></td></tr>
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Structural evidence for evolution of the beta/alpha barrel scaffold by gene duplication and fusion., Lang D, Thoma R, Henn-Sax M, Sterner R, Wilmanns M, Science. 2000 Sep 1;289(5484):1546-50. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=10968789 10968789]
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</table>
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[[Category: Single protein]]
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== Function ==
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[https://www.uniprot.org/uniprot/HIS6_THEMA HIS6_THEMA] IGPS catalyzes the conversion of PRFAR and glutamine to IGP, AICAR and glutamate. The HisF subunit catalyzes the cyclization activity that produces IGP and AICAR from PRFAR using the ammonia provided by the HisH subunit.[HAMAP-Rule:MF_01013]
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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/th/1thf_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=1thf ConSurf].
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<div style="clear:both"></div>
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
[[Category: Thermotoga maritima]]
[[Category: Thermotoga maritima]]
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[[Category: Lang, D A.]]
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[[Category: Lang DA]]
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[[Category: Wilmanns, M.]]
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[[Category: Wilmanns M]]
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[[Category: PO4]]
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[[Category: histidine biosynthesis]]
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[[Category: lyase]]
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[[Category: phosphate-binding sites]]
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[[Category: thermophile]]
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[[Category: tim-barrel]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 15:13:39 2008''
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Current revision

CYCLASE SUBUNIT OF IMIDAZOLEGLYCEROLPHOSPHATE SYNTHASE FROM THERMOTOGA MARITIMA

PDB ID 1thf

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