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| | ==Solution NMR structure of the myristoylated N-terminal fragment of Arf6== | | ==Solution NMR structure of the myristoylated N-terminal fragment of Arf6== |
| - | <StructureSection load='2bao' size='340' side='right' caption='[[2bao]], [[NMR_Ensembles_of_Models | 12 NMR models]]' scene=''> | + | <StructureSection load='2bao' size='340' side='right'caption='[[2bao]]' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2bao]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BAO OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2BAO FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2bao]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BAO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2BAO FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MYR:MYRISTIC+ACID'>MYR</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR, 12 models</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2bau|2bau]]</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MYR:MYRISTIC+ACID'>MYR</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=2bao FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bao OCA], [http://pdbe.org/2bao PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2bao RCSB], [http://www.ebi.ac.uk/pdbsum/2bao PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2bao 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=2bao FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bao OCA], [https://pdbe.org/2bao PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2bao RCSB], [https://www.ebi.ac.uk/pdbsum/2bao PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2bao ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://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/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> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Gizachew, D]] | + | [[Category: Homo sapiens]] |
| - | [[Category: Arf6]] | + | [[Category: Large Structures]] |
| - | [[Category: Myristoyl]] | + | [[Category: Gizachew D]] |
| - | [[Category: N-terminal]]
| + | |
| - | [[Category: Signaling protein]]
| + | |
| Structural highlights
Function
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.[1] [2] [3]
Publication Abstract from PubMed
Arf proteins are guanine nucleotide binding proteins that are implicated in endocytotic pathways and vesicle trafficking. The two widely studied isoforms of Arf proteins (Arf1 and Arf6) have different cellular functions and localizations but similar structures. Arf proteins have an N-terminal helix with a covalently bound myristoyl group. Except structural models, there are no three dimensional structures of the myristoylated N-terminal peptide or the intact myristoylated Arf proteins. However, understanding the role of both the myristoyl group and the N-terminal helix based on the details of their molecular structures is of great interest. In the solution structure of myristoylated N-terminal peptide of Arf6 described here, the myristoyl group folds toward the N-terminus to interact with the hydrophobic residues in particular, the phenyl ring. Also, the structure of the dodecylphosphocholine (DPC) micelle-bound of the peptide together with paramagnetic studies showed that the myristoyl group is inserted into the micelle while residues V4-G10 interact with the surface of the micelle. The structural differences between the unbound and micelle-bound myristoylated N-terminal peptide of Arf6 involves the myristoyl group and the side chains of the hydrophobic residues.
NMR structural studies of the myristoylated N-terminus of ADP ribosylation factor 6 (Arf6).,Gizachew D, Oswald R FEBS Lett. 2006 Jul 24;580(17):4296-301. Epub 2006 Jul 7. PMID:16839550[4]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ D'Souza-Schorey C, Stahl PD. Myristoylation is required for the intracellular localization and endocytic function of ARF6. Exp Cell Res. 1995 Nov;221(1):153-9. PMID:7589240 doi:http://dx.doi.org/10.1006/excr.1995.1362
- ↑ Gauthier-Campbell C, Bredt DS, Murphy TH, El-Husseini Ael-D. Regulation of dendritic branching and filopodia formation in hippocampal neurons by specific acylated protein motifs. Mol Biol Cell. 2004 May;15(5):2205-17. Epub 2004 Feb 20. PMID:14978216 doi:10.1091/mbc.E03-07-0493
- ↑ Pasqualato S, Menetrey J, Franco M, Cherfils J. The structural GDP/GTP cycle of human Arf6. EMBO Rep. 2001 Mar;2(3):234-8. PMID:11266366 doi:10.1093/embo-reports/kve043
- ↑ Gizachew D, Oswald R. NMR structural studies of the myristoylated N-terminus of ADP ribosylation factor 6 (Arf6). FEBS Lett. 2006 Jul 24;580(17):4296-301. Epub 2006 Jul 7. PMID:16839550 doi:http://dx.doi.org/S0014-5793(06)00810-6
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