View source for 4c1a


==Coiled coil domain of the ZfL2-1 ORF1 protein from the zebrafish ZfL2- 1 retrotransposon==
<StructureSection load='4c1a' size='340' side='right'caption='[[4c1a]], [[Resolution|resolution]] 1.55&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4c1a]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Danio_rerio Danio rerio]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4C1A OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4C1A 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]] 1.55&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</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=4c1a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4c1a OCA], [https://pdbe.org/4c1a PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4c1a RCSB], [https://www.ebi.ac.uk/pdbsum/4c1a PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4c1a ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q3LG57_DANRE Q3LG57_DANRE] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Non-LTR retrotransposons are mobile genetic elements and play a major role in eukaryotic genome evolution and disease. Similar to retroviruses they encode a reverse transcriptase, but their genomic integration mechanism is fundamentally different, and they lack homologs of the retroviral nucleocapsid-forming protein Gag. Instead, their first open reading frames encode distinct multi-domain proteins (ORF1ps) presumed to package the retrotransposon-encoded RNA into ribonucleoprotein particles (RNPs). The mechanistic roles of ORF1ps are poorly understood, particularly of ORF1ps that appear to harbor an enzymatic function in the form of an SGNH-type lipolytic acetylesterase. We determined the crystal structures of the coiled coil and esterase domains of the ORF1p from the Danio rerio ZfL2-1 element. We demonstrate a dimerization of the coiled coil and a hydrolytic activity of the esterase. Furthermore, the esterase binds negatively charged phospholipids and liposomes, but not oligo-(A) RNA. Unexpectedly, the esterase can split into two dynamic half-domains, suited to engulf long fatty acid substrates extending from the active site. These properties indicate a role for lipids and membranes in non-LTR retrotransposition. We speculate that Gag-like membrane targeting properties of ORF1ps could play a role in RNP assembly and in membrane-dependent transport or localization processes.

Structure and properties of the esterase from non-LTR retrotransposons suggest a role for lipids in retrotransposition.,Schneider AM, Schmidt S, Jonas S, Vollmer B, Khazina E, Weichenrieder O Nucleic Acids Res. 2013 Sep 3. PMID:24003030<ref>PMID:24003030</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4c1a" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Danio rerio]]
[[Category: Large Structures]]
[[Category: Schneider AM]]
[[Category: Weichenrieder O]]