1r3n

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[[Image:1r3n.gif|left|200px]]
 
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==Crystal structure of beta-alanine synthase from Saccharomyces kluyveri==
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The line below this paragraph, containing "STRUCTURE_1r3n", creates the "Structure Box" on the page.
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<StructureSection load='1r3n' size='340' side='right'caption='[[1r3n]], [[Resolution|resolution]] 2.70&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'>[[1r3n]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Lachancea_kluyveri Lachancea kluyveri]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1R3N OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1R3N FirstGlance]. <br>
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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]] 2.7&#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=BIB:BETA-AMINO+ISOBUTYRATE'>BIB</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
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{{STRUCTURE_1r3n| PDB=1r3n | 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=1r3n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1r3n OCA], [https://pdbe.org/1r3n PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1r3n RCSB], [https://www.ebi.ac.uk/pdbsum/1r3n PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1r3n ProSAT]</span></td></tr>
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</table>
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'''Crystal structure of beta-alanine synthase from Saccharomyces kluyveri'''
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== Function ==
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[https://www.uniprot.org/uniprot/Q96W94_LACKL Q96W94_LACKL]
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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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beta-Alanine synthase (beta AS) is the final enzyme of the reductive pyrimidine catabolic pathway, which is responsible for the breakdown of pyrimidine bases, including several anticancer drugs. In eukaryotes, beta ASs belong to two subfamilies, which exhibit a low degree of sequence similarity. We determined the structure of beta AS from Saccharomyces kluyveri to a resolution of 2.7 A. The subunit of the homodimeric enzyme consists of two domains: a larger catalytic domain with a dizinc metal center, which represents the active site of beta AS, and a smaller domain mediating the majority of the intersubunit contacts. Both domains exhibit a mixed alpha/beta-topology. Surprisingly, the observed high structural homology to a family of dizinc-dependent exopeptidases suggests that these two enzyme groups have a common origin. Alterations in the ligand composition of the metal-binding site can be explained as adjustments to the catalysis of a different reaction, the hydrolysis of an N-carbamyl bond by beta AS compared with the hydrolysis of a peptide bond by exopeptidases. In contrast, there is no resemblance to the three-dimensional structure of the functionally closely related N-carbamyl-d-amino acid amidohydrolases. Based on comparative structural analysis and observed deviations in the backbone conformations of the eight copies of the subunit in the asymmetric unit, we suggest that conformational changes occur during each catalytic cycle.
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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/r3/1r3n_consurf.spt"</scriptWhenChecked>
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1R3N is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Lachancea_kluyveri Lachancea kluyveri]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1R3N 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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Yeast beta-alanine synthase shares a structural scaffold and origin with dizinc-dependent exopeptidases., Lundgren S, Gojkovic Z, Piskur J, Dobritzsch D, J Biol Chem. 2003 Dec 19;278(51):51851-62. Epub 2003 Oct 8. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/14534321 14534321]
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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=1r3n ConSurf].
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[[Category: Beta-ureidopropionase]]
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<div style="clear:both"></div>
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__TOC__
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</StructureSection>
[[Category: Lachancea kluyveri]]
[[Category: Lachancea kluyveri]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Dobritzsch, D.]]
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[[Category: Dobritzsch D]]
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[[Category: Gojkovic, Z.]]
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[[Category: Gojkovic Z]]
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[[Category: Lundgren, S.]]
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[[Category: Lundgren S]]
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[[Category: Piskur, J.]]
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[[Category: Piskur J]]
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[[Category: Alpha and beta protein]]
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[[Category: Di-zinc center]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 07:02:09 2008''
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Current revision

Crystal structure of beta-alanine synthase from Saccharomyces kluyveri

PDB ID 1r3n

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