4doz: Difference between revisions

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~~[[Image:4doz.jpg|left|200px]]~~

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===Crystal structure of Pyrococcus furiosus Cmr2 (Cas10)===

==Function==

[[http://www.uniprot.org/uniprot/CMR2_PYRFU CMR2_PYRFU]] 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), formerly called psiRNA (prokaryotic silencing) in this organism. Part of the Cmr ribonucleoprotein complex which has divalent cation-dependent endoribonuclease activity specific for ssRNA complementary to the crRNA, generating 5' hydroxy- and 3' phosphate or 2'-3' cyclic phosphate termini. It is not known which subunit has endoribonuclease activity. Cmr complex does not cleave ssDNA complementary to the crRNA. Cleavage of invading RNA is guided by the crRNA; substrate cleavage occurs a fixed distance (14 nt) from the 3' end of the crRNA. In vitro reconstitution shows Cmr1-2 and Cmr5 are not necessary for cleavage. Probably not the subunit that cleaves pre-crRNA, as mutation of numerous metal-binding residues have no effect on cleavage by assembled complex.<ref>PMID:19945378</ref>

==About this Structure==

[[4doz]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/~~Pyrococcus_furiosus~~ Pyrococcus furiosus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4DOZ OCA].

[[4doz]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Pyrococcus_furiosus_dsm_3638 Pyrococcus furiosus dsm 3638]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4DOZ OCA].

[[Category: Pyrococcus furiosus]]

==Reference==

[[Category: Pyrococcus furiosus dsm 3638]]

[[Category: Ye, K.]]

[[Category: Zhu, X.]]

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-[[Image:4doz.jpg|left|200px]]
-<!--
-The line below this paragraph, containing "STRUCTURE_4doz", creates the "Structure Box" on the page.
-You may change the PDB parameter (which sets the PDB file loaded into the applet)
-or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
-or leave the SCENE parameter empty for the default display.
--->
 {{STRUCTURE_4doz|  PDB=4doz  |  SCENE=  }}
 ===Crystal structure of Pyrococcus furiosus Cmr2 (Cas10)===
+{{ABSTRACT_PUBMED_22449983}}
+==Function==
+[[http://www.uniprot.org/uniprot/CMR2_PYRFU CMR2_PYRFU]] 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), formerly called psiRNA (prokaryotic silencing) in this organism. Part of the Cmr ribonucleoprotein complex which has divalent cation-dependent endoribonuclease activity specific for ssRNA complementary to the crRNA, generating 5' hydroxy- and 3' phosphate or 2'-3' cyclic phosphate termini. It is not known which subunit has endoribonuclease activity. Cmr complex does not cleave ssDNA complementary to the crRNA. Cleavage of invading RNA is guided by the crRNA; substrate cleavage occurs a fixed distance (14 nt) from the 3' end of the crRNA. In vitro reconstitution shows Cmr1-2 and Cmr5 are not necessary for cleavage. Probably not the subunit that cleaves pre-crRNA, as mutation of numerous metal-binding residues have no effect on cleavage by assembled complex.<ref>PMID:19945378</ref>
 ==About this Structure==
-[[4doz]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Pyrococcus_furiosus Pyrococcus furiosus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4DOZ OCA].
+[[4doz]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Pyrococcus_furiosus_dsm_3638 Pyrococcus furiosus dsm 3638]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4DOZ OCA].
-[[Category: Pyrococcus furiosus]]
+==Reference==
+<ref group="xtra">PMID:022449983</ref><references group="xtra"/><references/>
+[[Category: Pyrococcus furiosus dsm 3638]]
 [[Category: Ye, K.]]
 [[Category: Zhu, X.]]