View source for 2vy4


==U11-48K CHHC ZN-FINGER DOMAIN==
<StructureSection load='2vy4' size='340' side='right'caption='[[2vy4]]' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2vy4]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2VY4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2VY4 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</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=2vy4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2vy4 OCA], [https://pdbe.org/2vy4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2vy4 RCSB], [https://www.ebi.ac.uk/pdbsum/2vy4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2vy4 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/SNR48_HUMAN SNR48_HUMAN] Likely involved in U12-type 5' splice site recognition.<ref>PMID:19217400</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The formation of stable 18S U11/U12 di-snRNPs before their association with the pre-mRNA is a characteristic feature of the minor spliceosome. During the spliceosomal assembly, the 18S snRNP binds cooperatively to the introns' 5' splice and branch point site. The molecular basis for this recognition is still unknown. Here, we report the solution structure of the U11-48K CHHC Zn finger, a domain unique to the minor spliceosome. The CHHC Zn-finger structure revealed an unexpected similarity to the TFIIIA domains, with distinct features originating from the type and separation of the zinc-coordinating residues. We show that this domain specifically binds the 5' splice site sequence of U12-type introns when base paired to U11 snRNA in vitro and hence may contribute to the U12 intron recognition. We propose a model in which the U11-48K Zn finger stabilizes U11-5' splice site base pairing and thus plays an important role during the minor spliceosome assembly.

Solution structure of the U11-48K CHHC zinc-finger domain that specifically binds the 5' splice site of U12-type introns.,Tidow H, Andreeva A, Rutherford TJ, Fersht AR Structure. 2009 Feb 13;17(2):294-302. PMID:19217400<ref>PMID:19217400</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2vy4" style="background-color:#fffaf0;"></div>

==See Also==
*[[Nucleoprotein 3D structures|Nucleoprotein 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Andreeva A]]
[[Category: Fersht AR]]
[[Category: Rutherford TJ]]
[[Category: Tidow H]]