1g6y: Difference between revisions

← Older edit

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA

@@ Line 1: / Line 1: @@
-==CRYSTAL STRUCTURE OF THE GLOBULAR REGION OF THE PRION PROTIEN URE2 FROM YEAST SACCHAROMYCES CEREVISIAE==
-<StructureSection load='1g6y' size='340' side='right' caption='[[1g6y]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
+==CRYSTAL STRUCTURE OF THE GLOBULAR REGION OF THE PRION PROTEIN URE2 FROM YEAST SACCHAROMYCES CEREVISIAE==
+<StructureSection load='1g6y' size='340' side='right'caption='[[1g6y]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1g6y]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1G6Y OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1G6Y FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1g6y]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1G6Y OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1G6Y FirstGlance]. <br>
-</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1g6w|1g6w]]</td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.8&#8491;</td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">URE2 OR YNL229C OR N1165 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 Saccharomyces cerevisiae])</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=1g6y FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1g6y OCA], [https://pdbe.org/1g6y PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1g6y RCSB], [https://www.ebi.ac.uk/pdbsum/1g6y PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1g6y ProSAT]</span></td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1g6y FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1g6y OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1g6y RCSB], [http://www.ebi.ac.uk/pdbsum/1g6y PDBsum]</span></td></tr>
 </table>
+== Function ==
+[https://www.uniprot.org/uniprot/URE2_YEAST URE2_YEAST] Plays an important role in nitrogen catabolite repression. Down-regulates the expression of many genes involved in nitrogen utilization by inhibiting the GATA transcriptional activators GLN3 and GAT1. Under good nitrogen conditions, binds to the phosphorylated forms of GLN3 and GAT1 and sequesters them in the cytoplasm, preventing transcription of genes expressed upon nitrogen limitation. Is also an atypical glutaredoxin without a catalytical cysteine residue. Has glutathione peroxidase and thiol:disulfide oxidoreductase activities in both native and fibrillar form. Also shows insulin disulfide reductase and dehydroascorbic acid reductase (DHAR) actvites.<ref>PMID:1990286</ref> <ref>PMID:8755910</ref> <ref>PMID:10604478</ref> <ref>PMID:10799523</ref> <ref>PMID:15371425</ref> <ref>PMID:19321443</ref>
 == 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/g6/1g6y_consurf.spt"</scriptWhenChecked>
+     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/g6/1g6y_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/chain_selection.php?pdb_ID=2ata ConSurf].
+</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=1g6y ConSurf].
 <div style="clear:both"></div>
-<div style="background-color:#fffaf0;">
-== Publication Abstract from PubMed ==
-BACKGROUND: The [URE3] non-Mendelian element of the yeast S. cerevisiae is due to the propagation of a transmissible form of the protein Ure2. The infectivity of Ure2p is thought to originate from a conformational change of the normal form of the prion protein. This conformational change generates a form of Ure2p that assembles into amyloid fibrils. Hence, knowledge of the three-dimensional structure of prion proteins such as Ure2p should help in understanding the mechanism of amyloid formation associated with a number of neurodegenerative diseases. RESULTS: Here we report the three-dimensional crystal structure of the globular region of Ure2p (residues 95--354), also called the functional region, solved at 2.5 A resolution by the MAD method. The structure of Ure2p 95--354 shows a two-domain protein forming a globular dimer. The N-terminal domain is composed of a central 4 strand beta sheet flanked by four alpha helices, two on each side. In contrast, the C-terminal domain is entirely alpha-helical. The fold of Ure2p 95--354 resembles that of the beta class glutathione S-transferases (GST), in line with a weak similarity in the amino acid sequence that exists between these proteins. Ure2p dimerizes as GST does and possesses a potential ligand binding site, although it lacks GST activity. CONCLUSIONS: The structure of the functional region of Ure2p is the first crystal structure of a prion protein. Structure comparisons between Ure2p 95--354 and GST identified a 32 amino acid residues cap region in Ure2p exposed to the solvent. The cap region is highly flexible and may interact with the N-terminal region of the partner subunit in the dimer. The implication of this interaction in the assembly of Ure2p into amyloid fibrils is discussed.
-Structure of the globular region of the prion protein Ure2 from the yeast Saccharomyces cerevisiae.,Bousset L, Belrhali H, Janin J, Melki R, Morera S Structure. 2001 Jan 10;9(1):39-46. PMID:11342133<ref>PMID:11342133</ref>
-From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-</div>
 ==See Also==
-*[[Prion|Prion]]
+*[[Prion 3D structures|Prion 3D structures]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
+[[Category: Large Structures]]
 [[Category: Saccharomyces cerevisiae]]
-[[Category: Belrhali, H]]
+[[Category: Belrhali H]]
-[[Category: Bousset, L]]
+[[Category: Bousset L]]
-[[Category: Janin, J]]
+[[Category: Janin J]]
-[[Category: Melki, R]]
+[[Category: Melki R]]
-[[Category: Morera, S]]
+[[Category: Morera S]]
-[[Category: Gst superfamily]]
-[[Category: Structural genomic]]