2i13: Difference between revisions

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-[[Image:2i13.gif|left|200px]]<br /><applet load="2i13" size="350" color="white" frame="true" align="right" spinBox="true"
-caption="2i13, resolution 1.960&Aring;" />
-'''Aart, a six finger zinc finger designed to recognize ANN triplets'''<br />
-==Overview==
+==Aart, a six finger zinc finger designed to recognize ANN triplets==
-Cys2-His2 zinc fingers are one of the most common types of DNA-binding domains. Modifications to zinc-finger binding specificity have recently enabled custom DNA-binding proteins to be designed to a wide array of target sequences. We present here a 1.96 A structure of Aart, a designed six-zinc finger protein, bound to a consensus DNA target site. This is the first structure of a designed protein with six fingers, and was intended to provide insights into the unusual affinity and specificity characteristics of this protein. Most protein-DNA contacts were found to be consistent with expectations, while others were unanticipated or insufficient to explain specificity. Several were unexpectedly mediated by glycerol, water molecules or amino acid-base stacking interactions. These results challenge some conventional concepts of recognition, particularly the finding that triplets containing 5'A, C, or T are typically not specified by direct interaction with the amino acid in position 6 of the recognition helix.
+<StructureSection load='2i13' size='340' side='right'caption='[[2i13]], [[Resolution|resolution]] 1.96&Aring;' scene=''>
+== Structural highlights ==
-==About this Structure==
+<table><tr><td colspan='2'>[[2i13]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2I13 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2I13 FirstGlance]. <br>
-I13 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus] with <scene name='pdbligand=ZN:'>ZN</scene> and <scene name='pdbligand=GOL:'>GOL</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2I13 OCA].
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.96&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
-==Reference==
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2i13 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2i13 OCA], [https://pdbe.org/2i13 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2i13 RCSB], [https://www.ebi.ac.uk/pdbsum/2i13 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2i13 ProSAT]</span></td></tr>
-Structure of Aart, a designed six-finger zinc finger peptide, bound to DNA., Segal DJ, Crotty JW, Bhakta MS, Barbas CF 3rd, Horton NC, J Mol Biol. 2006 Oct 20;363(2):405-21. Epub 2006 Aug 11. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=16963084 16963084]
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/ZSCA2_MOUSE ZSCA2_MOUSE] May be involved in transcriptional regulation during the post-meiotic stages of spermatogenesis.
+== 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/i1/2i13_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=2i13 ConSurf].
+<div style="clear:both"></div>
+__TOC__
+</StructureSection>
+[[Category: Large Structures]]
 [[Category: Mus musculus]]
-[[Category: Single protein]]
+[[Category: Barbas III CF]]
-[[Category: Bhakta, M.]]
+[[Category: Bhakta M]]
-[[Category: Crotty, J W.]]
+[[Category: Crotty JW]]
-[[Category: Horton, N C.]]
+[[Category: Horton NC]]
-[[Category: III, C F.Barbas.]]
+[[Category: Segal DJ]]
-[[Category: Segal, D J.]]
-[[Category: GOL]]
-[[Category: ZN]]
-[[Category: dna binding]]
-[[Category: zinc finger]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 17:47:55 2008''