1re0

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[[Image:1re0.png|left|200px]]
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==Structure of ARF1-GDP bound to Sec7 domain complexed with Brefeldin A==
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<StructureSection load='1re0' size='340' side='right' caption='[[1re0]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1re0]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RE0 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1RE0 FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=AFB:1,6,7,8,9,11A,12,13,14,14A-DECAHYDRO-1,13-DIHYDROXY-6-METHYL-4H-CYCLOPENT[F]OXACYCLOTRIDECIN-4-ONE'>AFB</scene>, <scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene><br>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ARF1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]), Gea1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 Saccharomyces cerevisiae])</td></tr>
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<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=1re0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1re0 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1re0 RCSB], [http://www.ebi.ac.uk/pdbsum/1re0 PDBsum]</span></td></tr>
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<table>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/re/1re0_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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ARF GTPases are activated by guanine nucleotide exchange factors (GEFs) of the Sec7 family that promote the exchange of GDP for GTP. Brefeldin A (BFA) is a fungal metabolite that binds to the ARF1*GDP*Sec7 complex and blocks GEF activity at an early stage of the reaction, prior to guanine nucleotide release. The crystal structure of the ARF1*GDP*Sec7*BFA complex shows that BFA binds at the protein-protein interface to inhibit conformational changes in ARF1 required for Sec7 to dislodge the GDP molecule. Based on a comparative analysis of the inhibited complex, nucleotide-free ARF1*Sec7 and ARF1*GDP, we suggest that, in addition to forcing nucleotide release, the ARF1-Sec7 binding energy is used to open a cavity on ARF1 to facilitate the rearrangement of hydrophobic core residues between the GDP and GTP conformations. Thus, the Sec7 domain may act as a dual catalyst, facilitating both nucleotide release and conformational switching on ARF proteins.
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{{STRUCTURE_1re0| PDB=1re0 | SCENE= }}
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Crystal structure of ARF1*Sec7 complexed with Brefeldin A and its implications for the guanine nucleotide exchange mechanism.,Mossessova E, Corpina RA, Goldberg J Mol Cell. 2003 Dec;12(6):1403-11. PMID:14690595<ref>PMID:14690595</ref>
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===Structure of ARF1-GDP bound to Sec7 domain complexed with Brefeldin A===
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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{{ABSTRACT_PUBMED_14690595}}
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== References ==
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<references/>
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==About this Structure==
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__TOC__
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[[1re0]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RE0 OCA].
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</StructureSection>
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==Reference==
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<ref group="xtra">PMID:014690595</ref><references group="xtra"/>
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[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Saccharomyces cerevisiae]]

Revision as of 17:09, 29 September 2014

Structure of ARF1-GDP bound to Sec7 domain complexed with Brefeldin A

1re0, resolution 2.40Å

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