2h1x: Difference between revisions
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== | ==Crystal structure of 5-hydroxyisourate Hydrolase (formerly known as TRP, Transthyretin Related Protein)== | ||
<StructureSection load='2h1x' size='340' side='right'caption='[[2h1x]], [[Resolution|resolution]] 1.98Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[2h1x]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Danio_rerio Danio rerio]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2H1X OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2H1X FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.98Å</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=2h1x FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2h1x OCA], [https://pdbe.org/2h1x PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2h1x RCSB], [https://www.ebi.ac.uk/pdbsum/2h1x PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2h1x ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/HIUH_DANRE HIUH_DANRE] Catalyzes the hydrolysis of 5-hydroxyisourate (HIU) to 2-oxo-4-hydroxy-4-carboxy-5-ureidoimidazoline (OHCU). | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/h1/2h1x_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</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=2h1x ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
During early vertebrate evolution, a duplication event in the gene encoding 5-hydroxyisourate hydrolase (HIUase), a widely distributed enzyme of purine metabolism, gave rise to transthyretin (TTR), a thyroid hormone transporter. We report here on the crystal structure of zebra fish HIUase in two different crystal forms. Despite the phylogenetic distance, this structure compares well with those of newly characterized bacterial HIUases, especially with regard to catalytic regions, which are highly preserved. Comparison with TTR structure reveals a highly conserved scaffold, harbouring distinct functional sites located in the same regions of the two vertebrate proteins. Residues that are differentially conserved in HIUases compared to TTR map in putative catalytic regions occupying significant portions of the two halves of a central channel that transverses the whole TTR protein. The evolution of TTR has been accompanied by remarkable changes of the HIUase active sites that gave rise to a channel open at both ends, thus allowing free access to hormone molecules. | During early vertebrate evolution, a duplication event in the gene encoding 5-hydroxyisourate hydrolase (HIUase), a widely distributed enzyme of purine metabolism, gave rise to transthyretin (TTR), a thyroid hormone transporter. We report here on the crystal structure of zebra fish HIUase in two different crystal forms. Despite the phylogenetic distance, this structure compares well with those of newly characterized bacterial HIUases, especially with regard to catalytic regions, which are highly preserved. Comparison with TTR structure reveals a highly conserved scaffold, harbouring distinct functional sites located in the same regions of the two vertebrate proteins. Residues that are differentially conserved in HIUases compared to TTR map in putative catalytic regions occupying significant portions of the two halves of a central channel that transverses the whole TTR protein. The evolution of TTR has been accompanied by remarkable changes of the HIUase active sites that gave rise to a channel open at both ends, thus allowing free access to hormone molecules. | ||
Structure of zebra fish HIUase: insights into evolution of an enzyme to a hormone transporter.,Zanotti G, Cendron L, Ramazzina I, Folli C, Percudani R, Berni R J Mol Biol. 2006 Oct 13;363(1):1-9. Epub 2006 Aug 2. PMID:16952372<ref>PMID:16952372</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 2h1x" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Transthyretin 3D structures|Transthyretin 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Danio rerio]] | [[Category: Danio rerio]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Berni R]] | |||
[[Category: Berni | [[Category: Cendron L]] | ||
[[Category: Cendron | [[Category: Folli C]] | ||
[[Category: Folli | [[Category: Percudani R]] | ||
[[Category: Percudani | [[Category: Ramazzina I]] | ||
[[Category: Ramazzina | [[Category: Zanotti G]] | ||
[[Category: Zanotti | |||