2i3p

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[[Image:2i3p.gif|left|200px]]
 
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{{Structure
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==K28R mutant of Homing Endonuclease I-CreI==
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|PDB= 2i3p |SIZE=350|CAPTION= <scene name='initialview01'>2i3p</scene>, resolution 2.300&Aring;
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<StructureSection load='2i3p' size='340' side='right'caption='[[2i3p]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=DA:2&#39;-DEOXYADENOSINE-5&#39;-MONOPHOSPHATE'>DA</scene>, <scene name='pdbligand=DC:2&#39;-DEOXYCYTIDINE-5&#39;-MONOPHOSPHATE'>DC</scene>, <scene name='pdbligand=DG:2&#39;-DEOXYGUANOSINE-5&#39;-MONOPHOSPHATE'>DG</scene>, <scene name='pdbligand=DT:THYMIDINE-5&#39;-MONOPHOSPHATE'>DT</scene>
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<table><tr><td colspan='2'>[[2i3p]] 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=2I3P OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2I3P FirstGlance]. <br>
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|ACTIVITY=
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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]] 2.3&#8491;</td></tr>
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|GENE=
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene></td></tr>
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|DOMAIN=
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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=2i3p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2i3p OCA], [https://pdbe.org/2i3p PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2i3p RCSB], [https://www.ebi.ac.uk/pdbsum/2i3p PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2i3p ProSAT]</span></td></tr>
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|RELATEDENTRY=[[2i3q|2I3Q]]
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</table>
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2i3p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2i3p OCA], [http://www.ebi.ac.uk/pdbsum/2i3p PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2i3p RCSB]</span>
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== Function ==
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}}
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[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.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/i3/2i3p_consurf.spt"</scriptWhenChecked>
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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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</jmolCheckbox>
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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=2i3p ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Homing endonucleases are highly specific enzymes, capable of recognizing and cleaving unique DNA sequences in complex genomes. Since such DNA cleavage events can result in targeted allele-inactivation and/or allele-replacement in vivo, the ability to engineer homing endonucleases matched to specific DNA sequences of interest would enable powerful and precise genome manipulations. We have taken a step-wise genetic approach in analyzing individual homing endonuclease I-CreI protein/DNA contacts, and describe here novel interactions at four distinct target site positions. Crystal structures of two mutant endonucleases reveal the molecular interactions responsible for their altered DNA target specificities. We also combine novel contacts to create an endonuclease with the predicted target specificity. These studies provide important insights into engineering homing endonucleases with novel target specificities, as well as into the evolution of DNA recognition by this fascinating family of proteins.
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'''K28R mutant of Homing Endonuclease I-CreI'''
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Homing endonuclease I-CreI derivatives with novel DNA target specificities.,Rosen LE, Morrison HA, Masri S, Brown MJ, Springstubb B, Sussman D, Stoddard BL, Seligman LM Nucleic Acids Res. 2006;34(17):4791-800. Epub 2006 Sep 13. PMID:16971456<ref>PMID:16971456</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 2i3p" style="background-color:#fffaf0;"></div>
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==Overview==
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==See Also==
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Homing endonucleases are highly specific enzymes, capable of recognizing and cleaving unique DNA sequences in complex genomes. Since such DNA cleavage events can result in targeted allele-inactivation and/or allele-replacement in vivo, the ability to engineer homing endonucleases matched to specific DNA sequences of interest would enable powerful and precise genome manipulations. We have taken a step-wise genetic approach in analyzing individual homing endonuclease I-CreI protein/DNA contacts, and describe here novel interactions at four distinct target site positions. Crystal structures of two mutant endonucleases reveal the molecular interactions responsible for their altered DNA target specificities. We also combine novel contacts to create an endonuclease with the predicted target specificity. These studies provide important insights into engineering homing endonucleases with novel target specificities, as well as into the evolution of DNA recognition by this fascinating family of proteins.
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*[[Endonuclease 3D structures|Endonuclease 3D structures]]
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== References ==
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==About this Structure==
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<references/>
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2I3P is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Chlamydomonas_reinhardtii Chlamydomonas reinhardtii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2I3P OCA].
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__TOC__
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</StructureSection>
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==Reference==
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Homing endonuclease I-CreI derivatives with novel DNA target specificities., Rosen LE, Morrison HA, Masri S, Brown MJ, Springstubb B, Sussman D, Stoddard BL, Seligman LM, Nucleic Acids Res. 2006;34(17):4791-800. Epub 2006 Sep 13. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16971456 16971456]
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[[Category: Chlamydomonas reinhardtii]]
[[Category: Chlamydomonas reinhardtii]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Rosen, L.]]
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[[Category: Rosen L]]
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[[Category: Sussman, D.]]
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[[Category: Sussman D]]
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[[Category: dna]]
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[[Category: homing endonulease i-crei]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 03:39:15 2008''
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Current revision

K28R mutant of Homing Endonuclease I-CreI

PDB ID 2i3p

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Proteopedia Page Contributors and Editors (what is this?)

OCA

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