8sfi: Difference between revisions

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New page: '''Unreleased structure''' The entry 8sfi is ON HOLD Authors: Description: Category: Unreleased Structures
 
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'''Unreleased structure'''


The entry 8sfi is ON HOLD
==WT CRISPR-Cas12a with a 8bp R-loop==
 
<StructureSection load='8sfi' size='340' side='right'caption='[[8sfi]], [[Resolution|resolution]] 3.50&Aring;' scene=''>
Authors:  
== Structural highlights ==
 
<table><tr><td colspan='2'>[[8sfi]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Acidaminococcus_sp._BV3L6 Acidaminococcus sp. BV3L6] 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=8SFI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8SFI FirstGlance]. <br>
Description:  
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.5&#8491;</td></tr>
[[Category: Unreleased Structures]]
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=8sfi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8sfi OCA], [https://pdbe.org/8sfi PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8sfi RCSB], [https://www.ebi.ac.uk/pdbsum/8sfi PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8sfi ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/CS12A_ACISB CS12A_ACISB] 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 sequences complementary to antecedent mobile elements and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). Recognizes a short motif in the CRISPR repeat sequences (the 5' PAM or protospacer adjacent motif, TTTN in this organism) to help distinguish self versus nonself, as targets within the bacterial CRISPR locus do not have PAMs (PubMed:26422227). Has dsDNA endonuclease activity, results in staggered 4-base 5' overhangs 19 and 22 bases downstream of the PAM on the non-targeted and targeted strand respectively (PubMed:26422227). Non-target strand cleavage by the RuvC domain is probably a prerequisite of target strand cleavage by the Nuc domain (PubMed:27114038). In this CRISPR system correct processing of pre-crRNA requires only this protein and the CRISPR locus (By similarity).[UniProtKB:A0Q7Q2]<ref>PMID:26422227</ref> <ref>PMID:27114038</ref>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Acidaminococcus sp. BV3L6]]
[[Category: Large Structures]]
[[Category: Synthetic construct]]
[[Category: Strohkendl I]]
[[Category: Taylor DW]]

Latest revision as of 10:18, 3 July 2024

WT CRISPR-Cas12a with a 8bp R-loopWT CRISPR-Cas12a with a 8bp R-loop

Structural highlights

8sfi is a 4 chain structure with sequence from Acidaminococcus sp. BV3L6 and Synthetic construct. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:Electron Microscopy, Resolution 3.5Å
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

CS12A_ACISB 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 sequences complementary to antecedent mobile elements and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). Recognizes a short motif in the CRISPR repeat sequences (the 5' PAM or protospacer adjacent motif, TTTN in this organism) to help distinguish self versus nonself, as targets within the bacterial CRISPR locus do not have PAMs (PubMed:26422227). Has dsDNA endonuclease activity, results in staggered 4-base 5' overhangs 19 and 22 bases downstream of the PAM on the non-targeted and targeted strand respectively (PubMed:26422227). Non-target strand cleavage by the RuvC domain is probably a prerequisite of target strand cleavage by the Nuc domain (PubMed:27114038). In this CRISPR system correct processing of pre-crRNA requires only this protein and the CRISPR locus (By similarity).[UniProtKB:A0Q7Q2][1] [2]

References

  1. ↑ Zetsche B, Gootenberg JS, Abudayyeh OO, Slaymaker IM, Makarova KS, Essletzbichler P, Volz SE, Joung J, van der Oost J, Regev A, Koonin EV, Zhang F. Cpf1 is a single RNA-guided endonuclease of a class 2 CRISPR-Cas system. Cell. 2015 Oct 22;163(3):759-71. doi: 10.1016/j.cell.2015.09.038. Epub 2015 Sep, 25. PMID:26422227 doi:http://dx.doi.org/10.1016/j.cell.2015.09.038
  2. ↑ Yamano T, Nishimasu H, Zetsche B, Hirano H, Slaymaker IM, Li Y, Fedorova I, Nakane T, Makarova KS, Koonin EV, Ishitani R, Zhang F, Nureki O. Crystal Structure of Cpf1 in Complex with Guide RNA and Target DNA. Cell. 2016 May 5;165(4):949-62. doi: 10.1016/j.cell.2016.04.003. Epub 2016 Apr, 21. PMID:27114038 doi:http://dx.doi.org/10.1016/j.cell.2016.04.003

8sfi, resolution 3.50Å

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