3a4k

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[[Image:3a4k.png|left|200px]]
 
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{{STRUCTURE_3a4k| PDB=3a4k | SCENE= }}
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==Crystal structural analysis of HindIII restriction endonuclease in complex with cognate DNA and divalent cations at 2.17 angstrom resolution==
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<StructureSection load='3a4k' size='340' side='right'caption='[[3a4k]], [[Resolution|resolution]] 2.17&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[3a4k]] is a 14 chain structure with sequence from [https://en.wikipedia.org/wiki/Haemophilus_influenzae_Rd_KW20 Haemophilus influenzae Rd KW20]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3A4K OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3A4K FirstGlance]. <br>
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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]] 2.17&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene></td></tr>
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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=3a4k FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3a4k OCA], [https://pdbe.org/3a4k PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3a4k RCSB], [https://www.ebi.ac.uk/pdbsum/3a4k PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3a4k ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/T2D3_HAEIN T2D3_HAEIN] Recognizes the double-stranded sequence AAGCTT and cleaves after A-1.
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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/a4/3a4k_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=3a4k 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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The three-dimensional crystal structures of HindIII bound to its cognate DNA with and without divalent cations were solved at 2.17 and 2.00 A resolution, respectively. HindIII forms a dimer. The structures showed that HindIII belongs to the EcoRI-like (alpha-class) subfamily of type II restriction endonucleases. The cognate DNA-complex structures revealed the specific DNA-recognition mechanism of HindIII by which it recognizes the palindromic sequence A/AGCTT. In the Mg(2+) ion-soaked structure the DNA was cleaved and two ions were bound at each active site, corresponding to the two-metal-ion mechanism.
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===Crystal structural analysis of HindIII restriction endonuclease in complex with cognate DNA and divalent cations at 2.17 angstrom resolution===
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Structures of restriction endonuclease HindIII in complex with its cognate DNA and divalent cations.,Watanabe N, Takasaki Y, Sato C, Ando S, Tanaka I Acta Crystallogr D Biol Crystallogr. 2009 Dec;65(Pt 12):1326-33. doi:, 10.1107/S0907444909041134. Epub 2009 Nov 17. PMID:19966419<ref>PMID:19966419</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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==About this Structure==
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</div>
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[[3a4k]] is a 14 chain structure of [[Endonuclease]] 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=3A4K OCA].
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<div class="pdbe-citations 3a4k" style="background-color:#fffaf0;"></div>
==See Also==
==See Also==
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*[[Endonuclease|Endonuclease]]
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*[[Endonuclease 3D structures|Endonuclease 3D structures]]
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[[Category: Haemophilus influenzae]]
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== References ==
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[[Category: Type II site-specific deoxyribonuclease]]
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<references/>
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[[Category: Sato, C.]]
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__TOC__
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[[Category: Takasaki, Y.]]
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</StructureSection>
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[[Category: Tanaka, I.]]
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[[Category: Haemophilus influenzae Rd KW20]]
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[[Category: Watanabe, N.]]
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[[Category: Large Structures]]
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[[Category: Endonuclease]]
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[[Category: Sato C]]
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[[Category: Hydrolase]]
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[[Category: Takasaki Y]]
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[[Category: Hydrolase-dna complex]]
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[[Category: Tanaka I]]
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[[Category: Nuclease]]
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[[Category: Watanabe N]]
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[[Category: Restriction system]]
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Current revision

Crystal structural analysis of HindIII restriction endonuclease in complex with cognate DNA and divalent cations at 2.17 angstrom resolution

PDB ID 3a4k

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