1ev7

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[[Image:1ev7.gif|left|200px]]
 
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==CRYSTAL STRUCTURE OF DNA RESTRICTION ENDONUCLEASE NAEI==
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The line below this paragraph, containing "STRUCTURE_1ev7", creates the "Structure Box" on the page.
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<StructureSection load='1ev7' size='340' side='right'caption='[[1ev7]], [[Resolution|resolution]] 2.38&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[1ev7]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Lentzea_aerocolonigenes Lentzea aerocolonigenes]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EV7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1EV7 FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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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]] 2.38&#8491;</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=1ev7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ev7 OCA], [https://pdbe.org/1ev7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ev7 RCSB], [https://www.ebi.ac.uk/pdbsum/1ev7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ev7 ProSAT]</span></td></tr>
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{{STRUCTURE_1ev7| PDB=1ev7 | SCENE= }}
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/T2N1_LENAE T2N1_LENAE] An E and P subtype restriction enzyme that recognizes the double-stranded unmethylated sequence 5'-GCCGGC-3' and cleaves after C-3.<ref>PMID:7892605</ref> <ref>PMID:8932368</ref> <ref>PMID:12654995</ref>
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'''CRYSTAL STRUCTURE OF DNA RESTRICTION ENDONUCLEASE NAEI'''
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==See Also==
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*[[Endonuclease 3D structures|Endonuclease 3D structures]]
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== References ==
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==Overview==
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<references/>
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NAE:I is transformed from DNA endonuclease to DNA topoisomerase and recombinase by a single amino acid substitution. The crystal structure of NAE:I was solved at 2.3 A resolution and shows that NAE:I is a dimeric molecule with two domains per monomer. Each domain contains one potential DNA recognition motif corresponding to either endonuclease or topoisomerase activity. The N-terminal domain core folds like the other type II restriction endonucleases as well as lambda-exonuclease and the DNA repair enzymes MutH and Vsr, implying a common evolutionary origin and catalytic mechanism. The C-terminal domain contains a catabolite activator protein (CAP) motif present in many DNA-binding proteins, including the type IA and type II topoisomerases. Thus, the NAE:I structure implies that DNA processing enzymes evolved from a few common ancestors. NAE:I may be an evolutionary bridge between endonuclease and DNA processing enzymes.
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__TOC__
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</StructureSection>
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==About this Structure==
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[[Category: Large Structures]]
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1EV7 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Lechevalieria_aerocolonigenes Lechevalieria aerocolonigenes]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EV7 OCA].
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[[Category: Lentzea aerocolonigenes]]
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[[Category: Chen Y]]
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==Reference==
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[[Category: Colandene JD]]
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Crystal structure of NaeI-an evolutionary bridge between DNA endonuclease and topoisomerase., Huai Q, Colandene JD, Chen Y, Luo F, Zhao Y, Topal MD, Ke H, EMBO J. 2000 Jun 15;19(12):3110-8. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10856254 10856254]
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[[Category: Huai Q]]
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[[Category: Lechevalieria aerocolonigenes]]
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[[Category: Luo F]]
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[[Category: Single protein]]
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[[Category: Zhao Y]]
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[[Category: Type II site-specific deoxyribonuclease]]
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[[Category: Chen, Y.]]
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[[Category: Colandene, J D.]]
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[[Category: Huai, Q.]]
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[[Category: Luo, F.]]
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[[Category: Zhao, Y.]]
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[[Category: Apo-naei]]
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[[Category: Cap]]
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[[Category: Helix-turn-helix]]
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[[Category: Restriction endonuclease]]
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[[Category: Topoisomerase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 15:33:23 2008''
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Current revision

CRYSTAL STRUCTURE OF DNA RESTRICTION ENDONUCLEASE NAEI

PDB ID 1ev7

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