UniprotKB/SwissProt ID: Q38912 (Q38912)
Gene Name:
ARAC3
Organism: Arabidopsis thaliana (Mouse-ear cress)
Function: Inactive GDP-bound Rho GTPases reside in the cytosol, are found in a complex with Rho GDP-dissociation inhibitors (Rho GDIs), and are released from the GDI protein in order to translocate to membranes upon activation. Involved in cell polarity control during the actin-dependent tip growth of root hairs, thus regulating root hair length and root hair initiation (PubMed:11387211, PubMed:30770391). Contributes, in a SPK1-dependent manner, to the prevention of cortical microtubules organization into parallel arrays oriented perpendicular to the axis of cell elongation to limit anisotropic cell growth during petal development (PubMed:31623377). SPK1-dependent activation is required for auxin-mediated inhibition of PIN2 internalization during gravitropic responses (PubMed:22683260)
Other Modifications: View all modification sites in dbPTM
Protein Subcellular Localization: Cytoplasm. Cell membrane
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