View source for 4yhx


==Crystal Structure of LAGLIDADG Meganuclease I-GpeMI Bound to Uncleaved DNA==
<StructureSection load='4yhx' size='340' side='right'caption='[[4yhx]], [[Resolution|resolution]] 2.15&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4yhx]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Grosmannia_penicillata Grosmannia penicillata] 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=4YHX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4YHX 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]] 2.15&#8491;</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=4yhx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4yhx OCA], [https://pdbe.org/4yhx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4yhx RCSB], [https://www.ebi.ac.uk/pdbsum/4yhx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4yhx ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/C7SQG1_9PEZI C7SQG1_9PEZI] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
LAGLIDADG meganucleases are DNA cleaving enzymes used for genome engineering. While their cleavage specificity can be altered using several protein engineering and selection strategies, their overall targetability is limited by highly specific indirect recognition of the central four base pairs within their recognition sites. In order to examine the physical basis of indirect sequence recognition and to expand the number of such nucleases available for genome engineering, we have determined the target sites, DNA-bound structures, and central four cleavage fidelities of nine related enzymes. Subsequent crystallographic analyses of a meganuclease bound to two noncleavable target sites, each containing a single inactivating base pair substitution at its center, indicates that a localized slip of the mutated base pair causes a small change in the DNA backbone conformation that results in a loss of metal occupancy at one binding site, eliminating cleavage activity.

Indirect DNA Sequence Recognition and Its Impact on Nuclease Cleavage Activity.,Lambert AR, Hallinan JP, Shen BW, Chik JK, Bolduc JM, Kulshina N, Robins LI, Kaiser BK, Jarjour J, Havens K, Scharenberg AM, Stoddard BL Structure. 2016 Apr 27. pii: S0969-2126(16)30035-1. doi:, 10.1016/j.str.2016.03.024. PMID:27133026<ref>PMID:27133026</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4yhx" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Grosmannia penicillata]]
[[Category: Large Structures]]
[[Category: Synthetic construct]]
[[Category: Hallinan JP]]
[[Category: Kaiser BK]]
[[Category: Stoddard BL]]