2a5d
From Proteopedia
(Difference between revisions)
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==Structural basis for the activation of cholera toxin by human ARF6-GTP== | ==Structural basis for the activation of cholera toxin by human ARF6-GTP== | ||
| - | <StructureSection load='2a5d' size='340' side='right' caption='[[2a5d]], [[Resolution|resolution]] 1.80Å' scene=''> | + | <StructureSection load='2a5d' size='340' side='right'caption='[[2a5d]], [[Resolution|resolution]] 1.80Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[2a5d]] is a 2 chain structure with sequence from [ | + | <table><tr><td colspan='2'>[[2a5d]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/"bacillo_virgola_del_koch"_trevisan_1884 "bacillo virgola del koch" trevisan 1884] and [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2A5D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2A5D FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=GTP:GUANOSINE-5-TRIPHOSPHATE'>GTP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr> | + | </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>, <scene name='pdbligand=GTP:GUANOSINE-5-TRIPHOSPHATE'>GTP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2a5f|2a5f]], [[2a5g|2a5g]]</td></tr> | + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2a5f|2a5f]], [[2a5g|2a5g]]</div></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ARF6 ([ | + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ARF6 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN]), ctxA, toxA ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=666 "Bacillo virgola del Koch" Trevisan 1884])</td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/NAD(+)--diphthamide_ADP-ribosyltransferase NAD(+)--diphthamide ADP-ribosyltransferase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.4.2.36 2.4.2.36] </span></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2a5d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2a5d OCA], [https://pdbe.org/2a5d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2a5d RCSB], [https://www.ebi.ac.uk/pdbsum/2a5d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2a5d ProSAT]</span></td></tr> |
</table> | </table> | ||
== Function == | == Function == | ||
| - | [[ | + | [[https://www.uniprot.org/uniprot/ARF6_HUMAN ARF6_HUMAN]] GTP-binding protein involved in protein trafficking; regulates endocytic recycling and cytoskeleton remodeling. May modulate vesicle budding and uncoating within the Golgi apparatus. Functions as an allosteric activator of the cholera toxin catalytic subunit, an ADP-ribosyltransferase. Involved in the regulation of dendritic spine development (By similarity). Contributes to the regulation of dendritic branching and filopodia extension.<ref>PMID:7589240</ref> <ref>PMID:14978216</ref> <ref>PMID:11266366</ref> [[https://www.uniprot.org/uniprot/CHTA_VIBCH CHTA_VIBCH]] The A1 chain catalyzes the ADP-ribosylation of Gs alpha, a GTP-binding regulatory protein, to activate the adenylate cyclase. This leads to an overproduction of cAMP and eventually to a hypersecretion of chloride and bicarbonate followed by water, resulting in the characteristic cholera stool. The A2 chain tethers A1 to the pentameric ring. |
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
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==See Also== | ==See Also== | ||
| - | *[[Cholera toxin|Cholera toxin]] | + | *[[Cholera toxin 3D structures|Cholera toxin 3D structures]] |
*[[User:David Solfiell/sandbox 1|User:David Solfiell/sandbox 1]] | *[[User:David Solfiell/sandbox 1|User:David Solfiell/sandbox 1]] | ||
== References == | == References == | ||
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[[Category: Bacillo virgola del koch trevisan 1884]] | [[Category: Bacillo virgola del koch trevisan 1884]] | ||
[[Category: Human]] | [[Category: Human]] | ||
| + | [[Category: Large Structures]] | ||
[[Category: Hol, W G.J]] | [[Category: Hol, W G.J]] | ||
[[Category: Holmes, R K]] | [[Category: Holmes, R K]] | ||
Revision as of 08:25, 27 January 2021
Structural basis for the activation of cholera toxin by human ARF6-GTP
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