6z2b: Difference between revisions

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA

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-'''Unreleased structure'''
-The entry 6z2b is ON HOLD
+==Toprim domain of RNase M5 bound with two Mg2+ ions==
+<StructureSection load='6z2b' size='340' side='right'caption='[[6z2b]], [[Resolution|resolution]] 2.14&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[6z2b]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Geobacillus_stearothermophilus Geobacillus stearothermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6Z2B OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6Z2B 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]] 2.138&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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=6z2b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6z2b OCA], [https://pdbe.org/6z2b PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6z2b RCSB], [https://www.ebi.ac.uk/pdbsum/6z2b PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6z2b ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/A0A087LGV4_GEOSE A0A087LGV4_GEOSE] Required for correct processing of both the 5' and 3' ends of 5S rRNA precursor. Cleaves both sides of a double-stranded region yielding mature 5S rRNA in one step.[HAMAP-Rule:MF_01469]
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+All species transcribe ribosomal RNA in an immature form that requires several enzymes for processing into mature rRNA. The number and types of enzymes utilized for these processes vary greatly between different species. In low G + C Gram-positive bacteria including Bacillus subtilis and Geobacillus stearothermophilus, the endoribonuclease (RNase) M5 performs the final step in 5S rRNA maturation, by removing the 3'- and 5'-extensions from precursor (pre) 5S rRNA. This cleavage activity requires initial complex formation between the pre-rRNA and a ribosomal protein, uL18, making the full M5 substrate a ribonucleoprotein particle (RNP). M5 contains a catalytic N-terminal Toprim domain and an RNA-binding C-terminal domain, respectively, shown to assist in processing and binding of the RNP. Here, we present structural data that show how two Mg(2+) ions are accommodated in the active site pocket of the catalytic Toprim domain and investigate the importance of these ions for catalysis. We further perform solution studies that support the previously proposed 3'-before-5' order of removal of the pre-5S rRNA extensions and map the corresponding M5 structural rearrangements during catalysis.
-Authors:
+Structural studies of RNase M5 reveal two-metal-ion supported two-step dsRNA cleavage for 5S rRNA maturation.,Oerum S, Catala M, Bourguet M, Gilet L, Barraud P, Cianferani S, Condon C, Tisne C RNA Biol. 2021 Feb 23:1-11. doi: 10.1080/15476286.2021.1885896. PMID:33541205<ref>PMID:33541205</ref>
-Description:
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-[[Category: Unreleased Structures]]
+</div>
+<div class="pdbe-citations 6z2b" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Ribonuclease 3D structures|Ribonuclease 3D structures]]
+== References ==
+<references/>
+__TOC__
+</StructureSection>
+[[Category: Geobacillus stearothermophilus]]
+[[Category: Large Structures]]
+[[Category: Catala M]]
+[[Category: Oerum S]]
+[[Category: Tisne C]]