3qrq

From Proteopedia

(Difference between revisions)

Revision as of 04:10, 5 August 2016

Structure of Thermus Thermophilus Cse3 bound to an RNA representing a pre-cleavage complex

Structural highlights

3qrq is a 2 chain structure with sequence from Thet8. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	3qrp, 3qrr
Gene:	TTHB1192, TTHB192 (THET8)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[CAS6_THET8] 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). This enzyme processes pre-crRNA into individual crRNA units, but may not actually undergo enzyme turnover, retaining the crRNA product (PubMed:21572442). Generates a 2',3'-cyclic phosphodiester.^[1] ^[2]

Publication Abstract from PubMed

In bacteria and archaea, small RNAs derived from clustered, regularly interspaced, short palindromic repeat (CRISPR) loci are involved in an adaptable and heritable gene-silencing pathway. Resistance to phage infection is conferred by the incorporation of short invading DNA sequences into the genome as CRISPR spacer elements separated by short repeat sequences. Processing of long primary transcripts (pre-crRNAs) containing these repeats by an RNA endonuclease generates the mature effector RNAs that interfere with phage gene expression. Here we describe structural and functional analyses of the Thermus thermophilus CRISPR Cse3 endonuclease. High-resolution X-ray structures of Cse3 bound to repeat RNAs model both the pre- and post-cleavage complexes associated with processing the pre-crRNA. These structures establish the molecular basis of a specific CRISPR RNA recognition and suggest the mechanism for generation of effector RNAs responsible for gene silencing.

Recognition and maturation of effector RNAs in a CRISPR interference pathway.,Gesner EM, Schellenberg MJ, Garside EL, George MM, Macmillan AM Nat Struct Mol Biol. 2011 May 15. PMID:21572444^[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Sashital DG, Jinek M, Doudna JA. An RNA-induced conformational change required for CRISPR RNA cleavage by the endoribonuclease Cse3. Nat Struct Mol Biol. 2011 Jun;18(6):680-7. Epub 2011 May 15. PMID:21572442 doi:10.1038/nsmb.2043
↑ Gesner EM, Schellenberg MJ, Garside EL, George MM, Macmillan AM. Recognition and maturation of effector RNAs in a CRISPR interference pathway. Nat Struct Mol Biol. 2011 May 15. PMID:21572444 doi:10.1038/nsmb.2042
↑ Gesner EM, Schellenberg MJ, Garside EL, George MM, Macmillan AM. Recognition and maturation of effector RNAs in a CRISPR interference pathway. Nat Struct Mol Biol. 2011 May 15. PMID:21572444 doi:10.1038/nsmb.2042

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3qrq"

@@ Line 1: / Line 1: @@
 ==Structure of Thermus Thermophilus Cse3 bound to an RNA representing a pre-cleavage complex==
 <StructureSection load='3qrq' size='340' side='right' caption='[[3qrq]], [[Resolution|resolution]] 3.19&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3qrq]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Thermus_thermophilus_hb8 Thermus thermophilus hb8]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3QRQ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3QRQ FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3qrq]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Thet8 Thet8]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3QRQ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3QRQ FirstGlance]. <br>
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3qrp|3qrp]], [[3qrr|3qrr]]</td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TTHB1192, TTHB192 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=300852 Thermus thermophilus HB8])</td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TTHB1192, TTHB192 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=300852 THET8])</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=3qrq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3qrq OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3qrq RCSB], [http://www.ebi.ac.uk/pdbsum/3qrq PDBsum]</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=3qrq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3qrq OCA], [http://pdbe.org/3qrq PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3qrq RCSB], [http://www.ebi.ac.uk/pdbsum/3qrq PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3qrq ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/Q53WG9_THET8 Q53WG9_THET8]] 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). Processes pre-crRNA into individual crRNA units, but may not actually undergo enzyme turnover, retaining the crRNA product. Generates a 2',3'-cyclic phosphodiester.<ref>PMID:21572442</ref> <ref>PMID:21572444</ref>
+[[http://www.uniprot.org/uniprot/CAS6_THET8 CAS6_THET8]] 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). This enzyme processes pre-crRNA into individual crRNA units, but may not actually undergo enzyme turnover, retaining the crRNA product (PubMed:21572442). Generates a 2',3'-cyclic phosphodiester.<ref>PMID:21572442</ref> <ref>PMID:21572444</ref>
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 17: / Line 18: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 3qrq" style="background-color:#fffaf0;"></div>
 ==See Also==
@@ Line 24: / Line 26: @@
 __TOC__
 </StructureSection>
-[[Category: Thermus thermophilus hb8]]
+[[Category: Thet8]]
 [[Category: E L., Garside]]
 [[Category: Gesner, E G]]

3qrq

From Proteopedia

Revision as of 04:10, 5 August 2016

Structure of Thermus Thermophilus Cse3 bound to an RNA representing a pre-cleavage complex

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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