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==Crystal Structure of ArfGAP and ANK repeat domain of ACAP1==
==Crystal Structure of ArfGAP and ANK repeat domain of ACAP1==
<StructureSection load='3jue' size='340' side='right' caption='[[3jue]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
<StructureSection load='3jue' size='340' side='right'caption='[[3jue]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3jue]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3JUE OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3JUE FirstGlance]. <br>
<table><tr><td colspan='2'>[[3jue]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3JUE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3JUE FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.3&#8491;</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ACAP1, CENTB1, KIAA0050 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3jue FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3jue OCA], [http://pdbe.org/3jue PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3jue RCSB], [http://www.ebi.ac.uk/pdbsum/3jue PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3jue ProSAT]</span></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=3jue FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3jue OCA], [https://pdbe.org/3jue PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3jue RCSB], [https://www.ebi.ac.uk/pdbsum/3jue PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3jue ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/ACAP1_HUMAN ACAP1_HUMAN]] GTPase-activating protein (GAP) for ADP ribosylation factor 6 (ARF6) required for clathrin-dependent export of proteins from recycling endosomes to trans-Golgi network and cell surface. Required for regulated export of ITGB1 from recycling endosomes to the cell surface and ITGB1-dependent cell migration.<ref>PMID:11062263</ref> <ref>PMID:16256741</ref> <ref>PMID:17398097</ref> <ref>PMID:17664335</ref> <ref>PMID:22645133</ref>
[https://www.uniprot.org/uniprot/ACAP1_HUMAN ACAP1_HUMAN] GTPase-activating protein (GAP) for ADP ribosylation factor 6 (ARF6) required for clathrin-dependent export of proteins from recycling endosomes to trans-Golgi network and cell surface. Required for regulated export of ITGB1 from recycling endosomes to the cell surface and ITGB1-dependent cell migration.<ref>PMID:11062263</ref> <ref>PMID:16256741</ref> <ref>PMID:17398097</ref> <ref>PMID:17664335</ref> <ref>PMID:22645133</ref>  
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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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/main_output.php?pdb_ID=3jue ConSurf].
</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/main_output.php?pdb_ID=3jue ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Coat complexes sort protein cargoes into vesicular transport pathways. An emerging class of coat components has been the GAPs (GTPase activating proteins) that act on the ARF (ADP-Ribosylation factor) family of small GTPases. ACAP1 (ArfGAP with Coil coil, Ankyrin repeat, and PH domain protein 1) is an ARF6 GAP that also acts as a key component of a recently defined clathrin complex for endocytic recycling. Phosphorylation by Akt has been shown to enhance cargo binding by ACAP1 in explaining how integrin recycling is an example of regulated transport. We now shed further mechanistic insights into how this regulation is achieved at the level of cargo binding by ACAP1. We initially define a critical sequence in the cytoplasmic domain of integrin beta1 recognized by ACAP1, and show that this sequence acts as a recycling sorting signal. We then pursue a combination of structural, modeling and functional studies, which suggest that phosphorylation of ACAP1 relieves a localized mechanism of auto-inhibition in regulating cargo binding. Thus, we have elucidated a key regulatory juncture that controls integrin recycling, and also advanced the understanding of how regulated cargo binding can lead to regulated transport.
Mechanistic insights into regulated cargo binding by ACAP1.,Bai M, Pang X, Lou J, Zhou Q, Zhang K, Ma J, Li J, Sun F, Hsu V J Biol Chem. 2012 May 29. PMID:22645133<ref>PMID:22645133</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3jue" style="background-color:#fffaf0;"></div>
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Human]]
[[Category: Homo sapiens]]
[[Category: Ma, J]]
[[Category: Large Structures]]
[[Category: Pang, X]]
[[Category: Ma J]]
[[Category: Sun, F]]
[[Category: Pang X]]
[[Category: Zhang, K]]
[[Category: Sun F]]
[[Category: Zhou, Q]]
[[Category: Zhang K]]
[[Category: Ank repeat]]
[[Category: Zhou Q]]
[[Category: Arfgap domain]]
[[Category: Gtpase activation]]
[[Category: Metal-binding]]
[[Category: Nitration]]
[[Category: Phosphoprotein]]
[[Category: Protein transport]]
[[Category: Protein transport-endocytosis complex]]
[[Category: Transport]]
[[Category: Zinc-binding module]]
[[Category: Zinc-finger]]
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