View source for 4l69


==Rv2372c of Mycobacterium tuberculosis is RsmE like methyltransferse==
<StructureSection load='4l69' size='340' side='right'caption='[[4l69]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4l69]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycobacterium_tuberculosis Mycobacterium tuberculosis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4L69 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4L69 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]] 2.9&#8491;</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=4l69 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4l69 OCA], [https://pdbe.org/4l69 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4l69 RCSB], [https://www.ebi.ac.uk/pdbsum/4l69 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4l69 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/RSME_MYCTU RSME_MYCTU] Specifically methylates the N3 position of the uracil ring of uridine 1498 (m3U1498) in 16S rRNA. Acts on the fully assembled 30S ribosomal subunit (By similarity).
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
U1498 of 16S rRNA plays an important role in translation fidelity as well as in antibiotic response. U1498 is present in a methylated form in the decoding centre of the ribosome. In this study, Rv2372c from Mycobacterium tuberculosis has been identified as an RsmE-like methyltransferase which specifically methylates U1498 of 16S rRNA at the N3 position and can complement RsmE-deleted Escherichia coli. The crystal structure of Rv2372c has been determined, and reveals that the protein belongs to a distinct class in the SPOUT superfamily and exists as a dimer. The deletion of critical residues at the C-terminus of Rv2372c leads to an inability of the protein to form stable dimers and to abolition of the methyltransferase activity. A ternary model of Rv2372c with its cofactor S-adenosylmethionine (SAM) and the 16S rRNA fragment (1487)16S rRNA(1510) helps to identify binding pockets for SAM (in the deep trefoil knot) and substrate RNA (at the dimer interface) and suggests an SN2 mechanism for the methylation of N3 of U1498 in 16S rRNA.

The structure of Rv2372c identifies an RsmE-like methyltransferase from Mycobacterium tuberculosis.,Kumar A, Kumar S, Taneja B Acta Crystallogr D Biol Crystallogr. 2014 Mar;70(Pt 3):821-32. doi:, 10.1107/S1399004713033555. Epub 2014 Feb 22. PMID:24598751<ref>PMID:24598751</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4l69" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Mycobacterium tuberculosis]]
[[Category: Kumar A]]
[[Category: Taneja B]]