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==Crystal structure analysis of the methyltransferase domain of bacterial-AvHen1-CN==
==Crystal structure analysis of the methyltransferase domain of bacterial-AvHen1-CN==
<StructureSection load='3jwj' size='340' side='right' caption='[[3jwj]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
<StructureSection load='3jwj' size='340' side='right'caption='[[3jwj]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3jwj]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Anabaena_variabilis Anabaena variabilis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3JWJ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3JWJ FirstGlance]. <br>
<table><tr><td colspan='2'>[[3jwj]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Trichormus_variabilis_ATCC_29413 Trichormus variabilis ATCC 29413]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3JWJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3JWJ FirstGlance]. <br>
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3jwh|3jwh]], [[3jwi|3jwi]], [[3jwg|3jwg]]</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]] 2.5&#8491;</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Ava_1594 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1172 Anabaena variabilis])</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=3jwj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3jwj OCA], [https://pdbe.org/3jwj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3jwj RCSB], [https://www.ebi.ac.uk/pdbsum/3jwj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3jwj ProSAT]</span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3jwj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3jwj OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3jwj RCSB], [http://www.ebi.ac.uk/pdbsum/3jwj PDBsum]</span></td></tr>
</table>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q3MCR9_TRIV2 Q3MCR9_TRIV2]
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
Check<jmol>
   <jmolCheckbox>
   <jmolCheckbox>
     <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/jw/3jwj_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/jw/3jwj_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
     <text>to colour the structure by Evolutionary Conservation</text>
   </jmolCheckbox>
   </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=3jwj ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Small RNAs of approximately 20-30 nt have diverse and important biological roles in eukaryotic organisms. After being generated by Dicer or Piwi proteins, all small RNAs in plants and a subset of small RNAs in animals are further modified at their 3'-terminal nucleotides via 2'-O-methylation, carried out by the S-adenosylmethionine-dependent methyltransferase (MTase) Hen1. Methylation at the 3' terminus is vital for biological functions of these small RNAs. Here, we report four crystal structures of the MTase domain of a bacterial homolog of Hen1 from Clostridium thermocellum and Anabaena variabilis, which are enzymatically indistinguishable from the eukaryotic Hen1 in their ability to methylate small single-stranded RNAs. The structures reveal that, in addition to the core fold of the MTase domain shared by other RNA and DNA MTases, the MTase domain of Hen1 possesses a motif and a domain that are highly conserved and are unique to Hen1. The unique motif and domain are likely to be involved in RNA substrate recognition and catalysis. The structures allowed us to construct a docking model of an RNA substrate bound to the MTase domain of bacterial Hen1, which is likely similar to that of the eukaryotic counterpart. The model, supported by mutational studies, provides insight into RNA substrate specificity and catalytic mechanism of Hen1.
Structural and biochemical insights into 2'-O-methylation at the 3'-terminal nucleotide of RNA by Hen1.,Mui Chan C, Zhou C, Brunzelle JS, Huang RH Proc Natl Acad Sci U S A. 2009 Oct 20;106(42):17699-704. Epub 2009 Oct 12. PMID:19822745<ref>PMID:19822745</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Anabaena variabilis]]
[[Category: Large Structures]]
[[Category: Brunzelle, J S]]
[[Category: Trichormus variabilis ATCC 29413]]
[[Category: Chan, C M]]
[[Category: Brunzelle JS]]
[[Category: Huang, R H]]
[[Category: Chan CM]]
[[Category: Zhou, C]]
[[Category: Huang RH]]
[[Category: Methyltransferase]]
[[Category: Zhou C]]
[[Category: Transferase]]

Latest revision as of 13:13, 21 February 2024

Crystal structure analysis of the methyltransferase domain of bacterial-AvHen1-CNCrystal structure analysis of the methyltransferase domain of bacterial-AvHen1-CN

Structural highlights

3jwj is a 2 chain structure with sequence from Trichormus variabilis ATCC 29413. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.5Å
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

Q3MCR9_TRIV2

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

3jwj, resolution 2.50Å

Drag the structure with the mouse to rotate

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