We apologize for Proteopedia being slow to respond. For the past two years, a new implementation of Proteopedia has been being built. Soon, it will replace this 18-year old system. All existing content will be moved to the new system at a date that will be announced here.

3qb5

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
Current revision (11:39, 14 March 2024) (edit) (undo)
 
(3 intermediate revisions not shown.)
Line 1: Line 1:
 +
==Human C3PO complex in the presence of MnSO4==
==Human C3PO complex in the presence of MnSO4==
-
<StructureSection load='3qb5' size='340' side='right' caption='[[3qb5]], [[Resolution|resolution]] 2.95&Aring;' scene=''>
+
<StructureSection load='3qb5' size='340' side='right'caption='[[3qb5]], [[Resolution|resolution]] 2.95&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
-
<table><tr><td colspan='2'>[[3qb5]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3QB5 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3QB5 FirstGlance]. <br>
+
<table><tr><td colspan='2'>[[3qb5]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3QB5 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3QB5 FirstGlance]. <br>
-
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
+
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.95&#8491;</td></tr>
-
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3pja|3pja]]</td></tr>
+
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
-
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TSN ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]), TSNAX, TRAX ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>
+
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3qb5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3qb5 OCA], [https://pdbe.org/3qb5 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3qb5 RCSB], [https://www.ebi.ac.uk/pdbsum/3qb5 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3qb5 ProSAT]</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=3qb5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3qb5 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3qb5 RCSB], [http://www.ebi.ac.uk/pdbsum/3qb5 PDBsum]</span></td></tr>
+
</table>
</table>
-
<div style="background-color:#fffaf0;">
+
== Function ==
-
== Publication Abstract from PubMed ==
+
[https://www.uniprot.org/uniprot/TSN_HUMAN TSN_HUMAN] DNA-binding protein that specifically recognizes consensus sequences at the breakpoint junctions in chromosomal translocations, mostly involving immunoglobulin (Ig)/T-cell receptor gene segments. Seems to recognize single-stranded DNA ends generated by staggered breaks occurring at recombination hot spots.<ref>PMID:9111049</ref> <ref>PMID:21552258</ref> Exhibits both single-stranded and double-stranded endoribonuclease activity. May act as an activator of RNA-induced silencing complex (RISC) by facilitating endonucleolytic cleavage of the siRNA passenger strand.<ref>PMID:9111049</ref> <ref>PMID:21552258</ref>
-
Assembly of the RNA-induced silencing complex (RISC) consists of loading duplex (guide-passenger) siRNA onto Argonaute (Ago2) and removing the passenger strand. Ago2 contributes critically to RISC activation by nicking the passenger strand. Here we reconstituted duplex siRNA-initiated RISC activity using recombinant human Ago2 (hAgo2) and C3PO, indicating that C3PO has a critical role in hAgo2-RISC activation. Consistently, genetic depletion of C3PO compromised RNA silencing in mammalian cells. We determined the crystal structure of hC3PO, which reveals an asymmetric octamer barrel consisting of six translin and two TRAX subunits. This asymmetric assembly is critical for the function of C3PO as an endonuclease that cleaves RNA at the interior surface. The current work supports a Dicer-independent mechanism for human RISC activation, in which Ago2 directly binds duplex siRNA and nicks the passenger strand, and then C3PO activates RISC by degrading the Ago2-nicked passenger strand.
+
-
 
+
-
Structure of C3PO and mechanism of human RISC activation.,Ye X, Huang N, Liu Y, Paroo Z, Huerta C, Li P, Chen S, Liu Q, Zhang H Nat Struct Mol Biol. 2011 May 8. PMID:21552258<ref>PMID:21552258</ref>
+
-
 
+
-
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
+
-
</div>
+
== References ==
== References ==
<references/>
<references/>
Line 21: Line 15:
</StructureSection>
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
-
[[Category: Chen, S]]
+
[[Category: Large Structures]]
-
[[Category: Huang, N]]
+
[[Category: Chen S]]
-
[[Category: Liu, Q]]
+
[[Category: Huang N]]
-
[[Category: Liu, Y]]
+
[[Category: Liu Q]]
-
[[Category: Paroo, Z]]
+
[[Category: Liu Y]]
-
[[Category: Ye, X]]
+
[[Category: Paroo Z]]
-
[[Category: Zhang, H]]
+
[[Category: Ye X]]
-
[[Category: Alpha helical bundle]]
+
[[Category: Zhang H]]
-
[[Category: Hydrolase]]
+
-
[[Category: Ribonuclease]]
+

Current revision

Human C3PO complex in the presence of MnSO4

PDB ID 3qb5

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3qb5"
Personal tools