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==METHYLTRANSFERASE DOMAIN OF SMALL RNA 2'-O-METHYLTRANSFERASE==
==METHYLTRANSFERASE DOMAIN OF SMALL RNA 2'-O-METHYLTRANSFERASE==
<StructureSection load='4xcx' size='340' side='right' caption='[[4xcx]], [[Resolution|resolution]] 2.84&Aring;' scene=''>
<StructureSection load='4xcx' size='340' side='right'caption='[[4xcx]], [[Resolution|resolution]] 2.84&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[4xcx]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4XCX OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4XCX FirstGlance]. <br>
<table><tr><td colspan='2'>[[4xcx]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4XCX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4XCX FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SAH:S-ADENOSYL-L-HOMOCYSTEINE'>SAH</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]] 2.84&#8491;</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">HENMT1, C1orf59 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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></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=4xcx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4xcx OCA], [http://pdbe.org/4xcx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4xcx RCSB], [http://www.ebi.ac.uk/pdbsum/4xcx PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4xcx ProSAT]</span></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=4xcx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4xcx OCA], [https://pdbe.org/4xcx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4xcx RCSB], [https://www.ebi.ac.uk/pdbsum/4xcx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4xcx ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/HENMT_HUMAN HENMT_HUMAN]] Methyltransferase that adds a 2'-O-methyl group at the 3'-end of piRNAs, a class of 24 to 30 nucleotide RNAs that are generated by a Dicer-independent mechanism and are primarily derived from transposons and other repeated sequence elements. This probably protects the 3'-end of piRNAs from uridylation activity and subsequent degradation. Stabilization of piRNAs is essential for gametogenesis (By similarity).  
[https://www.uniprot.org/uniprot/HENMT_HUMAN HENMT_HUMAN] Methyltransferase that adds a 2'-O-methyl group at the 3'-end of piRNAs, a class of 24 to 30 nucleotide RNAs that are generated by a Dicer-independent mechanism and are primarily derived from transposons and other repeated sequence elements. This probably protects the 3'-end of piRNAs from uridylation activity and subsequent degradation. Stabilization of piRNAs is essential for gametogenesis (By similarity).
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Chemokines and their receptors control cell migration during development, immune system responses, and in numerous diseases including inflammation and cancer. The structural basis of receptor:chemokine recognition has been a long-standing unanswered question due to the challenges of structure determination for membrane protein complexes. Here, we report the crystal structure of the chemokine receptor CXCR4 in complex with the viral chemokine antagonist vMIP-II at 3.1 A resolution. The structure revealed a 1:1 stoichiometry and a more extensive binding interface than anticipated from the paradigmatic two-site model. The structure helped rationalize a large body of mutagenesis data and together with modeling provided insights into CXCR4 interactions with its endogenous ligand CXCL12, its ability to recognize diverse ligands, and the specificity of CC and CXC receptors for their respective chemokines.
 
Crystal structure of the chemokine receptor CXCR4 in complex with a viral chemokine.,Qin L, Kufareva I, Holden LG, Wang C, Zheng Y, Zhao C, Fenalti G, Wu H, Han GW, Cherezov V, Abagyan R, Stevens RC, Handel TM Science. 2015 Jan 22. pii: 1261064. PMID:25612609<ref>PMID:25612609</ref>
 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4xcx" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Human]]
[[Category: Homo sapiens]]
[[Category: Arrowsmith, C H]]
[[Category: Large Structures]]
[[Category: Bountra, C]]
[[Category: Arrowsmith CH]]
[[Category: Brown, P J]]
[[Category: Bountra C]]
[[Category: Dong, A]]
[[Category: Brown PJ]]
[[Category: Edwards, A M]]
[[Category: Dong A]]
[[Category: Li, Y]]
[[Category: Edwards AM]]
[[Category: Structural genomic]]
[[Category: Li Y]]
[[Category: Walker, J R]]
[[Category: Walker JR]]
[[Category: Wernimont, A]]
[[Category: Wernimont A]]
[[Category: Wu, H]]
[[Category: Wu H]]
[[Category: Zeng, H]]
[[Category: Zeng H]]
[[Category: Methyltransferase]]
[[Category: Sah]]
[[Category: Sgc]]
[[Category: Transferase]]

Latest revision as of 10:44, 27 September 2023

METHYLTRANSFERASE DOMAIN OF SMALL RNA 2'-O-METHYLTRANSFERASEMETHYLTRANSFERASE DOMAIN OF SMALL RNA 2'-O-METHYLTRANSFERASE

Structural highlights

4xcx is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.84Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

HENMT_HUMAN Methyltransferase that adds a 2'-O-methyl group at the 3'-end of piRNAs, a class of 24 to 30 nucleotide RNAs that are generated by a Dicer-independent mechanism and are primarily derived from transposons and other repeated sequence elements. This probably protects the 3'-end of piRNAs from uridylation activity and subsequent degradation. Stabilization of piRNAs is essential for gametogenesis (By similarity).

4xcx, resolution 2.84Å

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OCA
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