View source for 6uka


==Crystal structure of RHOG and ELMO complex==
<StructureSection load='6uka' size='340' side='right'caption='[[6uka]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6uka]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6UKA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6UKA 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]] 2.4&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GNP:PHOSPHOAMINOPHOSPHONIC+ACID-GUANYLATE+ESTER'>GNP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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=6uka FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6uka OCA], [https://pdbe.org/6uka PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6uka RCSB], [https://www.ebi.ac.uk/pdbsum/6uka PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6uka ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/RHOG_HUMAN RHOG_HUMAN] Required for the formation of membrane ruffles during macropinocytosis. Plays a role in cell migration and is required for the formation of cup-like structures during trans-endothelial migration of leukocytes. In case of Salmonella enterica infection, activated by SopB and ARHGEF26/SGEF, which induces cytoskeleton rearrangements and promotes bacterial entry.<ref>PMID:15133129</ref> <ref>PMID:17074883</ref> <ref>PMID:17875742</ref> <ref>PMID:20679435</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
DOCK (dedicator of cytokinesis) proteins are multidomain guanine nucleotide exchange factors (GEFs) for RHO GTPases that regulate intracellular actin dynamics. DOCK proteins share catalytic (DOCK(DHR2)) and membrane-associated (DOCK(DHR1)) domains. The structurally-related DOCK1 and DOCK2 GEFs are specific for RAC, and require ELMO (engulfment and cell motility) proteins for function. The N-terminal RAS-binding domain (RBD) of ELMO (ELMO(RBD)) interacts with RHOG to modulate DOCK1/2 activity. Here, we determine the cryo-EM structures of DOCK2-ELMO1 alone, and as a ternary complex with RAC1, together with the crystal structure of a RHOG-ELMO2(RBD) complex. The binary DOCK2-ELMO1 complex adopts a closed, auto-inhibited conformation. Relief of auto-inhibition to an active, open state, due to a conformational change of the ELMO1 subunit, exposes binding sites for RAC1 on DOCK2(DHR2), and RHOG and BAI GPCRs on ELMO1. Our structure explains how up-stream effectors, including DOCK2 and ELMO1 phosphorylation, destabilise the auto-inhibited state to promote an active GEF.

Structure of the DOCK2-ELMO1 complex provides insights into regulation of the auto-inhibited state.,Chang L, Yang J, Jo CH, Boland A, Zhang Z, McLaughlin SH, Abu-Thuraia A, Killoran RC, Smith MJ, Cote JF, Barford D Nat Commun. 2020 Jul 10;11(1):3464. doi: 10.1038/s41467-020-17271-9. PMID:32651375<ref>PMID:32651375</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6uka" style="background-color:#fffaf0;"></div>

==See Also==
*[[GTP-binding protein 3D structures|GTP-binding protein 3D structures]]
*[[Rho GTPase 3D structures|Rho GTPase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Mus musculus]]
[[Category: Jo CH]]
[[Category: Killoran RC]]
[[Category: Smith MJ]]