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==STRUCTURE OF THE ARTT MOTIF E214N MUTANT C3BOT1 EXOENZYME (FREE STATE, CRYSTAL FORM III)== | |||
<StructureSection load='2c8e' size='340' side='right' caption='[[2c8e]], [[Resolution|resolution]] 1.60Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[2c8e]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Clostridium_botulinum Clostridium botulinum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2C8E OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2C8E FirstGlance]. <br> | |||
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene><br> | |||
<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1g24|1g24]], [[1gze|1gze]], [[1uzi|1uzi]], [[1gzf|1gzf]], [[2c8a|2c8a]], [[2c8b|2c8b]], [[2c8c|2c8c]], [[2c8d|2c8d]], [[2c89|2c89]], [[2c8f|2c8f]], [[2c8g|2c8g]], [[2c8h|2c8h]]</td></tr> | |||
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2c8e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2c8e OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2c8e RCSB], [http://www.ebi.ac.uk/pdbsum/2c8e PDBsum]</span></td></tr> | |||
<table> | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/c8/2c8e_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
C3-like exoenzymes are ADP-ribosyltransferases that specifically modify some Rho GTPase proteins, leading to their sequestration in the cytoplasm, and thus inhibiting their regulatory activity on the actin cytoskeleton. This modification process goes through three sequential steps involving NAD-hydrolysis, Rho recognition, and binding, leading to Rho ADP-ribosylation. Independently, three distinct residues within the ARTT loop of the C3 exoenzymes are critical for each of these steps. Supporting the critical role of the ARTT loop, we have shown previously that it adopts a distinct conformation upon NAD binding. Here, we present seven wild-type and ARTT loop-mutant structures of C3 exoenzyme of Clostridium botulinum free and bound to its true substrate, NAD, and to its NAD-hydrolysis product, nicotinamide. Altogether, these structures expand our understanding of the conformational diversity of the C3 exoenzyme, mainly within the ARTT loop. | |||
Structural basis for the NAD-hydrolysis mechanism and the ARTT-loop plasticity of C3 exoenzymes.,Menetrey J, Flatau G, Boquet P, Menez A, Stura EA Protein Sci. 2008 May;17(5):878-86. Epub 2008 Mar 27. PMID:18369192<ref>PMID:18369192</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
== | ==See Also== | ||
*[[Exoenzyme|Exoenzyme]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Clostridium botulinum]] | [[Category: Clostridium botulinum]] | ||
[[Category: Boquet, P.]] | [[Category: Boquet, P.]] | ||
Revision as of 07:21, 3 October 2014
STRUCTURE OF THE ARTT MOTIF E214N MUTANT C3BOT1 EXOENZYME (FREE STATE, CRYSTAL FORM III)STRUCTURE OF THE ARTT MOTIF E214N MUTANT C3BOT1 EXOENZYME (FREE STATE, CRYSTAL FORM III)
Structural highlights
Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedC3-like exoenzymes are ADP-ribosyltransferases that specifically modify some Rho GTPase proteins, leading to their sequestration in the cytoplasm, and thus inhibiting their regulatory activity on the actin cytoskeleton. This modification process goes through three sequential steps involving NAD-hydrolysis, Rho recognition, and binding, leading to Rho ADP-ribosylation. Independently, three distinct residues within the ARTT loop of the C3 exoenzymes are critical for each of these steps. Supporting the critical role of the ARTT loop, we have shown previously that it adopts a distinct conformation upon NAD binding. Here, we present seven wild-type and ARTT loop-mutant structures of C3 exoenzyme of Clostridium botulinum free and bound to its true substrate, NAD, and to its NAD-hydrolysis product, nicotinamide. Altogether, these structures expand our understanding of the conformational diversity of the C3 exoenzyme, mainly within the ARTT loop. Structural basis for the NAD-hydrolysis mechanism and the ARTT-loop plasticity of C3 exoenzymes.,Menetrey J, Flatau G, Boquet P, Menez A, Stura EA Protein Sci. 2008 May;17(5):878-86. Epub 2008 Mar 27. PMID:18369192[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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