5o96: Difference between revisions
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==Structure of the putative methyltransferase Lpg2936 from Legionella pneumophila in complex with the bound cofactor SAM== | |||
<StructureSection load='5o96' size='340' side='right'caption='[[5o96]], [[Resolution|resolution]] 2.30Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[5o96]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Legionella_pneumophila Legionella pneumophila]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5O96 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5O96 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]] 2.3Å</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='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5o96 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5o96 OCA], [https://pdbe.org/5o96 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5o96 RCSB], [https://www.ebi.ac.uk/pdbsum/5o96 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5o96 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/Q5ZRE6_LEGPH Q5ZRE6_LEGPH] Specifically methylates the N3 position of the uracil ring of uridine 1498 (m3U1498) in 16S rRNA. Acts on the fully assembled 30S ribosomal subunit.[PIRNR:PIRNR015601] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The methylation of U1498 located in the 16S ribosomal RNA of Escherichia coli is an important modification affecting ribosomal activity. RsmE methyltransferases methylate specifically this position in a mechanism that requires an S-adenosyl-L-methionine (AdoMet) molecule as cofactor. Here we report the structure of Apo and AdoMet-bound Lpg2936 from Legionella pneumophila at 1.5 and 2.3 A, respectively. The protein comprises an N-terminal PUA domain and a C-terminal SPOUT domain. The latter is responsible for protein dimerization and cofactor binding. Comparison with similar structures suggests that Lpg2936 is an RsmE-like enzyme that can target the equivalent of U1498 in the L. pneumophila ribosomal RNA, thereby potentially enhancing ribosomal activity during infection-mediated effector production. The multiple copies of the enzyme found in both structures reveal a flexible conformation of the bound AdoMet ligand. Isothermal titration calorimetry measurements suggest an asymmetric two site binding mode. Our results therefore also provide unprecedented insights into AdoMet/RsmE interaction, furthering our understanding of the RsmE catalytic mechanism. | |||
Crystal structure of the Legionella pneumophila Lpg2936 in complex with the cofactor S-adenosyl-L-methionine reveals novel insights into the mechanism of RsmE family methyltransferases.,Pinotsis N, Waksman G Protein Sci. 2017 Sep 22. doi: 10.1002/pro.3305. PMID:28940762<ref>PMID:28940762</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
[[Category: | <div class="pdbe-citations 5o96" style="background-color:#fffaf0;"></div> | ||
[[Category: Pinotsis | == References == | ||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Legionella pneumophila]] | |||
[[Category: Pinotsis N]] | |||
[[Category: Waksman G]] | |||
