2ex5: Difference between revisions

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<StructureSection load='2ex5' size='340' side='right'caption='[[2ex5]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
<StructureSection load='2ex5' size='340' side='right'caption='[[2ex5]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[2ex5]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EX5 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2EX5 FirstGlance]. <br>
<table><tr><td colspan='2'>[[2ex5]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Chlamydomonas_moewusii Chlamydomonas moewusii] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EX5 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2EX5 FirstGlance]. <br>
</td></tr><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>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2&#8491;</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1af5|1af5]], [[1bp7|1bp7]], [[1g9y|1g9y]], [[1g9z|1g9z]], [[1m5x|1m5x]], [[1mow|1mow]]</div></td></tr>
<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>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2ex5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ex5 OCA], [https://pdbe.org/2ex5 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ex5 RCSB], [https://www.ebi.ac.uk/pdbsum/2ex5 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ex5 ProSAT]</span></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=2ex5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ex5 OCA], [https://pdbe.org/2ex5 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ex5 RCSB], [https://www.ebi.ac.uk/pdbsum/2ex5 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ex5 ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[https://www.uniprot.org/uniprot/DNE1_CHLMO DNE1_CHLMO]] Endonuclease involved in intron homing. Recognizes a degenerate sequence of 17-19 bp to produce a staggered cut 5 bp downstream from the CeLSU.5 intron insertion site.  
[https://www.uniprot.org/uniprot/DNE1_CHLMO DNE1_CHLMO] Endonuclease involved in intron homing. Recognizes a degenerate sequence of 17-19 bp to produce a staggered cut 5 bp downstream from the CeLSU.5 intron insertion site.
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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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=2ex5 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=2ex5 ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Homing endonucleases are highly specific catalysts of DNA strand breaks, leading to the transfer of mobile intervening sequences containing the endonuclease ORF. We have determined the structure and DNA recognition behavior of I-CeuI, a homodimeric LAGLIDADG endonuclease from Chlamydomonas eugametos. This symmetric endonuclease displays unique structural elaborations on its core enzyme fold, and it preferentially cleaves a highly asymmetric target site. This latter property represents an early step, prior to gene fusion, in the generation of asymmetric DNA binding platforms from homodimeric ancestors. The divergence of the sequence, structure, and target recognition behavior of homing endonucleases, as illustrated by this study, leads to the invasion of novel genomic sites by mobile introns during evolution.
The structure of I-CeuI homing endonuclease: Evolving asymmetric DNA recognition from a symmetric protein scaffold.,Spiegel PC, Chevalier B, Sussman D, Turmel M, Lemieux C, Stoddard BL Structure. 2006 May;14(5):869-80. PMID:16698548<ref>PMID:16698548</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2ex5" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Endonuclease 3D structures|Endonuclease 3D structures]]
*[[Endonuclease 3D structures|Endonuclease 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Chlamydomonas moewusii]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Spiegel, P C]]
[[Category: Synthetic construct]]
[[Category: Stoddard, B L]]
[[Category: Spiegel PC]]
[[Category: Homing endonuclease]]
[[Category: Stoddard BL]]
[[Category: Homodimer]]
[[Category: Hydrolase-dna complex]]
[[Category: Laglidadg]]
[[Category: Protein-dna complex]]

Latest revision as of 12:20, 14 February 2024

Group I Intron-encoded Homing Endonuclease I-CeuI Complexed With DNAGroup I Intron-encoded Homing Endonuclease I-CeuI Complexed With DNA

Structural highlights

2ex5 is a 4 chain structure with sequence from Chlamydomonas moewusii and Synthetic construct. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.2Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

DNE1_CHLMO Endonuclease involved in intron homing. Recognizes a degenerate sequence of 17-19 bp to produce a staggered cut 5 bp downstream from the CeLSU.5 intron insertion site.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

See Also

2ex5, resolution 2.20Å

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OCA
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