function:GTP-binding protein that functions as an allosteric activator of the cholera toxin catalytic subunit, an ADP-ribosyltransferase. Involved in protein trafficking; may modulate vesicle budding and uncoating within the Golgi apparatus.,similarity:Belongs to the small GTPase superfamily.,similarity:Belongs to the small GTPase superfamily. Arf family.,subunit:Interacts with ARHGAP21, ASAP2, HERC1, PIP5K1C and UACA.,
Cytoplasm, cytosol . Cell membrane ; Lipid-anchor . Endosome membrane ; Lipid-anchor . Recycling endosome membrane ; Lipid-anchor . Cell projection, filopodium membrane ; Lipid-anchor . Cell projection, ruffle . Cleavage furrow . Midbody, Midbody ring . Early endosome membrane ; Lipid-anchor . Golgi apparatus, trans-Golgi network membrane ; Lipid-anchor . Distributed uniformly on the plasma membrane, as well as throughout the cytoplasm during metaphase. Subsequently concentrated at patches in the equatorial region at the onset of cytokinesis, and becomes distributed in the equatorial region concurrent with cleavage furrow ingression. In late stages of cytokinesis, concentrates at the midbody ring/Flemming body (PubMed:23603394). Recruitment to the midbody ring requires both activation by PSD/EFA6A and interaction with KIF23/MKLP1 (PubMed:23603394). After abscission of the intercellular bridge, incorporated into one of the daughter cells as a midbody remnant and localizes to punctate structures beneath the plasma membrane (PubMed:23603394). Recruited to the cell membrane in association with CYTH2 and ARL4C (PubMed:17398095). Colocalizes with DAB2IP at the plasma membrane and endocytic vesicles (PubMed:19948740). Myristoylation is required for proper localization to membranes: myristoylation on Lys-3 allows ARF6 to remain on membranes during the GTPase cycle (PubMed:7589240, PubMed:32103017). .
Ubiquitous, with higher levels in heart, substantia nigra, and kidney.
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