Small GTPases of the Rho family, Rho, Rac, and Cdc42, are critical regulators of the actin cytoskeleton and many other cellular processes. Rho GTPases are activated by Dbl-homology (DH)-domain-containing guanine nucleotide exchange factors (GEFs). DOCK 11 (dedicator of cytokinesis 11), also known as ACG or ZIZ2 (zizimin2), is a 2073 amino acid protein belonging to the DOCK family of cytokinesis-regulating proteins that is mainly expressed in peripheral blood leukocytes. DOCK 11 functions as a GEF that binds and activates Cdc42 by exchanging bound GDP for free GTP. Cdc42 mediates cell polarity, gene expression, cell cycle progression and cell-cell contacts. Similar to other DOCK family members, DOCK 11 contains a PH domain and two internal DOCK homology regions designated DHR1 and DHR2.
ACG; Activated Cdc42-associated guanine nucleotide exchange factor; Activated Cdc42-associated guanine nucleotide exchange factor, ACG; bB128O4.1.1 (novel protein); Dedicator of cytokinesis protein 11; DOCK-11; Zizimin 2; Zizimin-2; zizimin2
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