7wm6
From Proteopedia
(Difference between revisions)
| (One intermediate revision not shown.) | |||
| Line 1: | Line 1: | ||
| - | '''Unreleased structure''' | ||
| - | + | ==Crystal structure of SAH-bound TrmM from Mycoplasma capricolum== | |
| + | <StructureSection load='7wm6' size='340' side='right'caption='[[7wm6]], [[Resolution|resolution]] 2.54Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[7wm6]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycoplasma_capricolum_subsp._capricolum Mycoplasma capricolum subsp. capricolum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7WM6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7WM6 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]] 2.54Å</td></tr> | ||
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SAH:S-ADENOSYL-L-HOMOCYSTEINE'>SAH</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=7wm6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7wm6 OCA], [https://pdbe.org/7wm6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7wm6 RCSB], [https://www.ebi.ac.uk/pdbsum/7wm6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7wm6 ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/A0A0C2W699_MYCCA A0A0C2W699_MYCCA] | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | N(6) -methyladenosine (m(6) A), widely distributed in both coding and noncoding RNAs, regulates the epigenetic signals and RNA metabolism in eukaryotes. Although this posttranscriptional modification is frequently observed in messenger and ribosomal RNA, it is relatively rare in transfer RNA. In Escherichia coli, TrmM encoded by yfiC is the tRNA-specific N(6) methyltransferase, which modifies the A37 residue of tRNA(Val) (cmo(5) UAC) using S-adenosyl-l-methionine as a methyl donor. However, the structure-function relationship of this enzyme is not completely understood. In this report, we determined two x-ray crystal structures of Mycoplasma capricolum TrmM with and without S-adenosyl-l-homocysteine, which is a reaction product. We also demonstrated the cellular and in vitro activities of this enzyme in the m(6) A modification of tRNA and the requirement of a divalent metal ion for its function, which is unprecedented in other RNA N(6) methyltransferases, including the E. coli TrmM. Our results reveal that the dimeric form of M. capricolum TrmM is important for efficient tRNA binding and catalysis, thereby offering insights into the distinct substrate specificity of the monomeric E. coli homolog. | ||
| - | + | Structural and functional characterization of TrmM in m(6) A modification of bacterial tRNA.,Jeong H, Lee Y, Kim J Protein Sci. 2022 May;31(5):e4319. doi: 10.1002/pro.4319. PMID:35481631<ref>PMID:35481631</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | [[Category: | + | </div> |
| - | [[Category: Jeong | + | <div class="pdbe-citations 7wm6" style="background-color:#fffaf0;"></div> |
| - | [[Category: Kim | + | == References == |
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Mycoplasma capricolum subsp. capricolum]] | ||
| + | [[Category: Jeong H]] | ||
| + | [[Category: Kim J]] | ||
Current revision
Crystal structure of SAH-bound TrmM from Mycoplasma capricolum
| |||||||||||
