Aliases for ARHGEF18 Gene
External Ids for ARHGEF18 Gene
Previous GeneCards Identifiers for ARHGEF18 Gene
Rho GTPases are GTP binding proteins that regulate a wide spectrum of cellular functions. These cellular processes include cytoskeletal rearrangements, gene transcription, cell growth and motility. Activation of Rho GTPases is under the direct control of guanine nucleotide exchange factors (GEFs). The protein encoded by this gene is a guanine nucleotide exchange factor and belongs to the Rho GTPase GFE family. Family members share a common feature, a Dbl (DH) homology domain followed by a pleckstrin (PH) homology domain. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Oct 2008]
GeneCards Summary for ARHGEF18 Gene
ARHGEF18 (Rho/Rac Guanine Nucleotide Exchange Factor 18) is a Protein Coding gene. Among its related pathways are Signaling by GPCR and Signaling by Rho GTPases. GO annotations related to this gene include guanyl-nucleotide exchange factor activity and Rho guanyl-nucleotide exchange factor activity. An important paralog of this gene is ARHGEF12.
UniProtKB/Swiss-Prot for ARHGEF18 Gene
Acts as guanine nucleotide exchange factor (GEF) for RhoA GTPases. Its activation induces formation of actin stress fibers. Also act as a GEF for RAC1, inducing production of reactive oxygen species (ROS). Does not act as a GEF for CDC42. The G protein beta-gamma (Gbetagamma) subunits of heterotrimeric G proteins act as activators, explaining the integrated effects of LPA and other G-protein coupled receptor agonists on actin stress fiber formation, cell shape change and ROS production. Required for EPB41L4B-mediated regulation of the circumferential actomyosin belt in epithelial cells (PubMed:22006950).