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| | <StructureSection load='1p91' size='340' side='right'caption='[[1p91]], [[Resolution|resolution]] 2.80Å' scene=''> | | <StructureSection load='1p91' size='340' side='right'caption='[[1p91]], [[Resolution|resolution]] 2.80Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[1p91]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1P91 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1P91 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[1p91]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1P91 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1P91 FirstGlance]. <br> |
| - | </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>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.8Å</td></tr> |
| - | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>, <scene name='pdbligand=SAM:S-ADENOSYLMETHIONINE'>SAM</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">RRMA OR B1822 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 "Bacillus coli" Migula 1895])</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=1p91 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1p91 OCA], [https://pdbe.org/1p91 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1p91 RCSB], [https://www.ebi.ac.uk/pdbsum/1p91 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1p91 ProSAT], [https://www.topsan.org/Proteins/NESGC/1p91 TOPSAN]</span></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Transferase Transferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.1.187 and 2.1.1.188 2.1.1.187 and 2.1.1.188] </span></td></tr> | + | |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1p91 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1p91 OCA], [http://pdbe.org/1p91 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1p91 RCSB], [http://www.ebi.ac.uk/pdbsum/1p91 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1p91 ProSAT], [http://www.topsan.org/Proteins/NESGC/1p91 TOPSAN]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/RLMA_ECOLI RLMA_ECOLI]] Specifically methylates the guanosine in position 745 of 23S rRNA.<ref>PMID:9440525</ref> | + | [https://www.uniprot.org/uniprot/RLMA_ECOLI RLMA_ECOLI] Specifically methylates the guanosine in position 745 of 23S rRNA.<ref>PMID:9440525</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | <jmolCheckbox> | | <jmolCheckbox> |
| | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/p9/1p91_consurf.spt"</scriptWhenChecked> | | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/p9/1p91_consurf.spt"</scriptWhenChecked> |
| - | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked> |
| | <text>to colour the structure by Evolutionary Conservation</text> | | <text>to colour the structure by Evolutionary Conservation</text> |
| | </jmolCheckbox> | | </jmolCheckbox> |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Bacillus coli migula 1895]] | + | [[Category: Escherichia coli]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Transferase]]
| + | [[Category: Acton T]] |
| - | [[Category: Acton, T]] | + | [[Category: Arnold E]] |
| - | [[Category: Arnold, E]] | + | [[Category: Das K]] |
| - | [[Category: Das, K]] | + | [[Category: Montelione G]] |
| - | [[Category: Montelione, G]] | + | |
| - | [[Category: Structural genomic]]
| + | |
| - | [[Category: 23s rrna]]
| + | |
| - | [[Category: Er19]]
| + | |
| - | [[Category: G745]]
| + | |
| - | [[Category: Methyltransferase]]
| + | |
| - | [[Category: Nesg]]
| + | |
| - | [[Category: PSI, Protein structure initiative]]
| + | |
| - | [[Category: Rlma]]
| + | |
| - | [[Category: Rrma]]
| + | |
| Structural highlights
1p91 is a 2 chain structure with sequence from Escherichia coli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
| | Method: | X-ray diffraction, Resolution 2.8Å |
| Ligands: | , , , |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT, TOPSAN |
Function
RLMA_ECOLI Specifically methylates the guanosine in position 745 of 23S rRNA.[1]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
The RlmA class of enzymes (RlmA(I) and RlmA(II)) catalyzes N1-methylation of a guanine base (G745 in Gram-negative and G748 in Gram-positive bacteria) of hairpin 35 of 23S rRNA. We have determined the crystal structure of Escherichia coli RlmA(I) at 2.8-A resolution, providing 3D structure information for the RlmA class of RNA methyltransferases. The dimeric protein structure exhibits features that provide new insights into its molecular function. Each RlmA(I) molecule has a Zn-binding domain, responsible for specific recognition and binding of its rRNA substrate, and a methyltransferase domain. The asymmetric RlmA(I) dimer observed in the crystal structure has a well defined W-shaped RNA-binding cleft. Two S-adenosyl-l-methionine substrate molecules are located at the two valleys of the W-shaped RNA-binding cleft. The unique shape of the RNA-binding cleft, different from that of known RNA-binding proteins, is highly specific and structurally complements the 3D structure of hairpin 35 of bacterial 23S rRNA. Apart from the hairpin 35, parts of hairpins 33 and 34 also interact with the RlmA(I) dimer.
Crystal structure of RlmAI: implications for understanding the 23S rRNA G745/G748-methylation at the macrolide antibiotic-binding site.,Das K, Acton T, Chiang Y, Shih L, Arnold E, Montelione GT Proc Natl Acad Sci U S A. 2004 Mar 23;101(12):4041-6. Epub 2004 Mar 3. PMID:14999102[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Gustafsson C, Persson BC. Identification of the rrmA gene encoding the 23S rRNA m1G745 methyltransferase in Escherichia coli and characterization of an m1G745-deficient mutant. J Bacteriol. 1998 Jan;180(2):359-65. PMID:9440525
- ↑ Das K, Acton T, Chiang Y, Shih L, Arnold E, Montelione GT. Crystal structure of RlmAI: implications for understanding the 23S rRNA G745/G748-methylation at the macrolide antibiotic-binding site. Proc Natl Acad Sci U S A. 2004 Mar 23;101(12):4041-6. Epub 2004 Mar 3. PMID:14999102 doi:10.1073/pnas.0400189101
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