7e8o: Difference between revisions
m Protected "7e8o" [edit=sysop:move=sysop] |
No edit summary |
||
(3 intermediate revisions by the same user not shown) | |||
Line 1: | Line 1: | ||
==Crystal structure of proteinaceous RNase P(PRORP) from Planctomycetes bacterium GWF2_40_8 complexed with Escherichia coli histidine pre-tRNA== | |||
<StructureSection load='7e8o' size='340' side='right'caption='[[7e8o]], [[Resolution|resolution]] 2.80Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[7e8o]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] and [https://en.wikipedia.org/wiki/Planctomycetes_bacterium_GWF2_40_8 Planctomycetes bacterium GWF2_40_8]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7E8O OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7E8O FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.804Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene></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=7e8o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7e8o OCA], [https://pdbe.org/7e8o PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7e8o RCSB], [https://www.ebi.ac.uk/pdbsum/7e8o PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7e8o ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/A0A1G2XP69_9BACT A0A1G2XP69_9BACT] RNA-free RNase P that catalyzes the removal of the 5'-leader sequence from pre-tRNA to produce the mature 5'-terminus.[HAMAP-Rule:MF_01078] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Besides the canonical RNA-based RNase P, pre-tRNA 5'-end processing can also be catalyzed by protein-only RNase P (PRORP). To date, various PRORPs have been discovered, but the basis underlying substrate binding and cleavage by HARPs (homolog of Aquifex RNase P) remains elusive. Here, we report structural and biochemical studies of HARPs. Comparison of the apo- and pre-tRNA-complexed structures showed that HARP is able to undergo large conformational changes that facilitate pre-tRNA binding and catalytic site formation. Planctomycetes bacterium HARP exists as dimer in vitro, but gel filtration and electron microscopy analysis confirmed that HARPs from Thermococcus celer, Thermocrinis minervae and Thermocrinis ruber can assemble into larger oligomers. Structural analysis, mutagenesis and in vitro biochemical studies all supported one cooperative pre-tRNA processing mode, in which one HARP dimer binds pre-tRNA at the elbow region whereas 5'-end removal is catalyzed by the partner dimer. Our studies significantly advance our understanding on pre-tRNA processing by PRORPs. | |||
Crystal structures and insights into precursor tRNA 5'-end processing by prokaryotic minimal protein-only RNase P.,Li Y, Su S, Gao Y, Lu G, Liu H, Chen X, Shao Z, Zhang Y, Shao Q, Zhao X, Yang J, Cao C, Lin J, Ma J, Gan J Nat Commun. 2022 Apr 28;13(1):2290. doi: 10.1038/s41467-022-30072-6. PMID:35484139<ref>PMID:35484139</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
<div class="pdbe-citations 7e8o" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Ribonuclease 3D structures|Ribonuclease 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Escherichia coli]] | |||
[[Category: Large Structures]] | |||
[[Category: Planctomycetes bacterium GWF2_40_8]] | |||
[[Category: Gan JH]] | |||
[[Category: Li YY]] |