View source for 6tar


==Structure of the five-fold capsomer of the dArc1 capsid==
<SX load='6tar' size='340' side='right' viewer='molstar' caption='[[6tar]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6tar]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Drosophila_melanogaster Drosophila melanogaster]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6TAR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6TAR FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 2.8&#8491;</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=6tar FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6tar OCA], [https://pdbe.org/6tar PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6tar RCSB], [https://www.ebi.ac.uk/pdbsum/6tar PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6tar ProSAT]</span></td></tr>
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== Function ==
[https://www.uniprot.org/uniprot/ARC1_DROME ARC1_DROME] Master regulator of synaptic plasticity that self-assembles into virion-like capsids that encapsulate RNAs and mediate intercellular RNA transfer from motorneurons to muscles (PubMed:29328915). Arc1 protein is released from motorneurons in extracellular vesicles that mediate the transfer of Arc1 mRNA into muscle cells, where Arc1 mRNA can undergo activity-dependent translation (PubMed:29328915). Intercellular transfer od Arc1 mRNA is required for synaptic plasticity at the neuromuscular junction (PubMed:29328915). May play a role in energy balance: required for regulation of body fat by a specific population of brain neurons, named E347, that are necessary and sufficient for proper body fat storage (PubMed:26209258).<ref>PMID:26209258</ref> <ref>PMID:29328915</ref> 
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== Publication Abstract from PubMed ==
Arc, a neuronal gene that is critical for synaptic plasticity, originated through the domestication of retrotransposon Gag genes and mediates intercellular messenger RNA transfer. We report high-resolution structures of retrovirus-like capsids formed by Drosophila dArc1 and dArc2 that have surface spikes and putative internal RNA-binding domains. These data demonstrate that virus-like capsid-forming properties of Arc are evolutionarily conserved and provide a structural basis for understanding their function in intercellular communication.

Structures of virus-like capsids formed by the Drosophila neuronal Arc proteins.,Erlendsson S, Morado DR, Cullen HB, Feschotte C, Shepherd JD, Briggs JAG Nat Neurosci. 2020 Feb;23(2):172-175. doi: 10.1038/s41593-019-0569-y. Epub 2020, Jan 6. PMID:31907439<ref>PMID:31907439</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 6tar" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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[[Category: Drosophila melanogaster]]
[[Category: Large Structures]]
[[Category: Briggs JAG]]
[[Category: Erlendsson S]]
[[Category: Morado DR]]
[[Category: Shepherd JD]]