7enh

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'''Unreleased structure'''
 
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The entry 7enh is ON HOLD until Paper Publication
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==Crystal structure of cas and anti-cas protein complex==
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<StructureSection load='7enh' size='340' side='right'caption='[[7enh]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[7enh]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Staphylococcus_aureus Staphylococcus aureus] and [https://en.wikipedia.org/wiki/Staphylococcus_simulans Staphylococcus simulans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7ENH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7ENH 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]] 2.097&#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=NI:NICKEL+(II)+ION'>NI</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=7enh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7enh OCA], [https://pdbe.org/7enh PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7enh RCSB], [https://www.ebi.ac.uk/pdbsum/7enh PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7enh ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/CAS9_STAAU CAS9_STAAU] CRISPR (clustered regularly interspaced short palindromic repeat) is an adaptive immune system that provides protection against mobile genetic elements (viruses, transposable elements and conjugative plasmids). CRISPR clusters contain spacers, sequences complementary to antecedent mobile elements, and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). In type II CRISPR systems correct processing of pre-crRNA requires a trans-encoded small RNA (tracrRNA), endogenous ribonuclease 3 (rnc) and this protein. The tracrRNA serves as a guide for ribonuclease 3-aided processing of pre-crRNA. Subsequently Cas9/crRNA/tracrRNA endonucleolytically cleaves linear or circular dsDNA target complementary to the spacer; Cas9 is inactive in the absence of the 2 guide RNAs (gRNA). Cas9 recognizes the protospacer adjacent motif (PAM) in the CRISPR repeat sequences to help distinguish self versus nonself, as targets within the bacterial CRISPR locus do not have PAMs. PAM recognition is also required for catalytic activity.[HAMAP-Rule:MF_01480]<ref>PMID:25830891</ref> <ref>PMID:26098369</ref>
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Authors:
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==See Also==
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*[[Endonuclease 3D structures|Endonuclease 3D structures]]
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Description:
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== References ==
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[[Category: Unreleased Structures]]
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
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[[Category: Staphylococcus aureus]]
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[[Category: Staphylococcus simulans]]
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[[Category: Li X]]
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[[Category: Wang Y]]

Current revision

Crystal structure of cas and anti-cas protein complex

PDB ID 7enh

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OCA

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