1u0c: Difference between revisions

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

OCA

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-[[Image:1u0c.gif|left|200px]]<br />
-<applet load="1u0c" size="450" color="white" frame="true" align="right" spinBox="true"
-caption="1u0c, resolution 2.5&Aring;" />
-'''Y33C Mutatant of Homing endonuclease I-CreI'''<br />
-==Overview==
+==Y33C Mutant of Homing endonuclease I-CreI==
-Homing endonucleases are highly specific DNA endonucleases, encoded within, mobile introns or inteins, that induce targeted recombination, double-strand repair and gene conversion of their cognate target sites., Due to their biological function and high level of target specificity, these enzymes are under intense investigation as tools for gene targeting., These studies require that naturally occurring enzymes be redesigned to, recognize novel target sites. Here, we report studies in which the, homodimeric LAGLIDADG homing endonuclease I-CreI is altered at individual, side-chains corresponding to contact points to distinct base-pairs in its, target site. The resulting enzyme constructs drive specific elimination of, selected DNA targets in vivo and display shifted specificities of DNA, binding and cleavage in vitro. Crystal structures of two of these, constructs demonstrate that substitution of individual side-chain/DNA, contact patterns can occur with almost no structural deformation or, rearrangement of the surrounding complex, facilitating an isolated, modular redesign strategy for homing endonuclease activity and, specificity.
+<StructureSection load='1u0c' size='340' side='right'caption='[[1u0c]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[1u0c]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Chlamydomonas_reinhardtii Chlamydomonas reinhardtii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1U0C OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1U0C 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]] 2.5&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></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=1u0c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1u0c OCA], [https://pdbe.org/1u0c PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1u0c RCSB], [https://www.ebi.ac.uk/pdbsum/1u0c PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1u0c ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/DNE1_CHLRE DNE1_CHLRE] Endonuclease involved in group I intron homing. Recognizes and cleaves a 19-24 bp palindromic DNA site.
+== 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/u0/1u0c_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=1u0c ConSurf].
+<div style="clear:both"></div>
-==About this Structure==
+==See Also==
-U0C is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Chlamydomonas_reinhardtii Chlamydomonas reinhardtii] with MG as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1U0C OCA].
+*[[Endonuclease 3D structures|Endonuclease 3D structures]]
+__TOC__
-==Reference==
+</StructureSection>
-Isolation and characterization of new homing endonuclease specificities at individual target site positions., Sussman D, Chadsey M, Fauce S, Engel A, Bruett A, Monnat R Jr, Stoddard BL, Seligman LM, J Mol Biol. 2004 Sep 3;342(1):31-41. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15313605 15313605]
 [[Category: Chlamydomonas reinhardtii]]
-[[Category: Single protein]]
+[[Category: Large Structures]]
-[[Category: Bruett, A.]]
+[[Category: Bruett A]]
-[[Category: Chadsey, M.]]
+[[Category: Chadsey M]]
-[[Category: Engel, A.]]
+[[Category: Engel A]]
-[[Category: Fauce, S.]]
+[[Category: Fauce S]]
-[[Category: Monnat, R.]]
+[[Category: Monnat R]]
-[[Category: Seligman, L.M.]]
+[[Category: Seligman LM]]
-[[Category: Stoddard, B.L.]]
+[[Category: Stoddard BL]]
-[[Category: Sussman, D.]]
+[[Category: Sussman D]]
-[[Category: MG]]
-[[Category: dna endonuclease i-crei]]
-[[Category: protein/dna]]
-''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Thu Nov  8 12:44:12 2007''