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3e40
From Proteopedia
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| - | [[ | + | ==Q138F HincII bound to GTTAAC and cocrystallized with 5 mM Ca2+== |
| + | <StructureSection load='3e40' size='340' side='right' caption='[[3e40]], [[Resolution|resolution]] 2.10Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[3e40]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Haemophilus_influenzae Haemophilus influenzae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3E40 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3E40 FirstGlance]. <br> | ||
| + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr> | ||
| + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3e3y|3e3y]], [[3e41|3e41]], [[3e42|3e42]], [[3e43|3e43]], [[3e44|3e44]], [[3e45|3e45]]</td></tr> | ||
| + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">hindIIR, HI0512 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=727 Haemophilus influenzae])</td></tr> | ||
| + | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Type_II_site-specific_deoxyribonuclease Type II site-specific deoxyribonuclease], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.21.4 3.1.21.4] </span></td></tr> | ||
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3e40 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3e40 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3e40 RCSB], [http://www.ebi.ac.uk/pdbsum/3e40 PDBsum]</span></td></tr> | ||
| + | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Five new structures of the Q138F HincII enzyme bound to a total of three different DNA sequences and three different metal ions (Ca(2+), Mg(2+), and Mn(2+)) are presented. While previous structures were produced from soaking Ca(2+) into preformed Q138F HincII/DNA crystals, the new structures are derived from cocrystallization with Ca(2+), Mg(2+), or Mn(2+). The Mn(2)(+)-bound structure provides the first view of a product complex of Q138F HincII with cleaved DNA. Binding studies and a crystal structure show how Ca(2+) allows trapping of a Q138F HincII complex with noncognate DNA in a catalytically incompetent conformation. Many Q138F HincII/DNA structures show asymmetry, despite the binding of a symmetric substrate by a symmetric enzyme. The various complexes are fit into a model describing the different conformations of the DNA-bound enzyme and show how DNA conformational energetics determine DNA-cleavage rates by the Q138F HincII enzyme. | ||
| - | + | DNA distortion and specificity in a sequence-specific endonuclease.,Babic AC, Little EJ, Manohar VM, Bitinaite J, Horton NC J Mol Biol. 2008 Oct 31;383(1):186-204. Epub 2008 Aug 22. PMID:18762194<ref>PMID:18762194</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
| - | + | ||
| - | + | ||
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| - | + | ||
==See Also== | ==See Also== | ||
*[[Endonuclease|Endonuclease]] | *[[Endonuclease|Endonuclease]] | ||
| - | + | == References == | |
| - | == | + | <references/> |
| - | < | + | __TOC__ |
| + | </StructureSection> | ||
[[Category: Haemophilus influenzae]] | [[Category: Haemophilus influenzae]] | ||
[[Category: Type II site-specific deoxyribonuclease]] | [[Category: Type II site-specific deoxyribonuclease]] | ||
| - | [[Category: Babic, A C | + | [[Category: Babic, A C]] |
| - | [[Category: Horton, N C | + | [[Category: Horton, N C]] |
| - | [[Category: Little, E J | + | [[Category: Little, E J]] |
| - | [[Category: Manohar, V M | + | [[Category: Manohar, V M]] |
[[Category: Endonuclease]] | [[Category: Endonuclease]] | ||
[[Category: Hydrolase]] | [[Category: Hydrolase]] | ||
Revision as of 13:38, 19 November 2014
Q138F HincII bound to GTTAAC and cocrystallized with 5 mM Ca2+
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