3id5: Difference between revisions
No edit summary |
No edit summary |
||
| Line 3: | Line 3: | ||
<StructureSection load='3id5' size='340' side='right'caption='[[3id5]], [[Resolution|resolution]] 4.01Å' scene=''> | <StructureSection load='3id5' size='340' side='right'caption='[[3id5]], [[Resolution|resolution]] 4.01Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[3id5]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/ | <table><tr><td colspan='2'>[[3id5]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharolobus_solfataricus Saccharolobus solfataricus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ID5 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3ID5 FirstGlance]. <br> | ||
</td></tr><tr id=' | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 4.01Å</td></tr> | ||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SAM:S-ADENOSYLMETHIONINE'>SAM</scene></td></tr> | |||
<tr id=' | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3id5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3id5 OCA], [https://pdbe.org/3id5 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3id5 RCSB], [https://www.ebi.ac.uk/pdbsum/3id5 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3id5 ProSAT]</span></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=3id5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3id5 OCA], [https://pdbe.org/3id5 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3id5 RCSB], [https://www.ebi.ac.uk/pdbsum/3id5 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3id5 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[https://www.uniprot.org/uniprot/Q97ZH3_SACS2 Q97ZH3_SACS2] | |||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
| Line 37: | Line 36: | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: | [[Category: Saccharolobus solfataricus]] | ||
[[Category: | [[Category: Ye K]] | ||
Latest revision as of 22:21, 29 May 2024
Crystal structure of Sulfolobus solfataricus C/D RNP assembled with Nop5, fibrillarin, L7Ae and a split half C/D RNACrystal structure of Sulfolobus solfataricus C/D RNP assembled with Nop5, fibrillarin, L7Ae and a split half C/D RNA
Structural highlights
FunctionEvolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedBox C/D guide RNAs are abundant noncoding RNAs that primarily function to direct the 2'-O-methylation of specific nucleotides by base-pairing with substrate RNAs. In archaea, a bipartite C/D RNA assembles with L7Ae, Nop5, and the methyltransferase fibrillarin into a modification enzyme with unique substrate specificity. Here, we determined the crystal structure of an archaeal C/D RNA-protein complex (RNP) composed of all 3 core proteins and an engineered half-guide RNA at 4 A resolution, as well as 2 protein substructures at higher resolution. The RNP structure reveals that the C-terminal domains of Nop5 in the dimeric complex provide symmetric anchoring sites for 2 L7Ae-associated kink-turn motifs of the C/D RNA. A prominent protrusion in Nop5 seems to be important for guide RNA organization and function and for discriminating the structurally related U4 snRNA. Multiple conformations of the N-terminal domain of Nop5 and its associated fibrillarin in different structures indicate the inherent flexibility of the catalytic module, suggesting that a swinging motion of the catalytic module is part of the enzyme mechanism. We also built a model of a native C/D RNP with substrate and fibrillarin in an active conformation. Our results provide insight into the overall organization and mechanism of action of C/D RNA-guided RNA methyltransferases. Structural organization of box C/D RNA-guided RNA methyltransferase.,Ye K, Jia R, Lin J, Ju M, Peng J, Xu A, Zhang L Proc Natl Acad Sci U S A. 2009 Aug 5. PMID:19666563[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences |
| ||||||||||||||||||