Acts as a RAC1 guanine nucleotide exchange factor (GEF).
Involvement in disease
Defects in ARHGEF6 are the cause of mental retardation X-linked type 46 (MRX46) [MIM:300436]. Mental retardation is a mental disorder characterized by significantly sub-average general intellectual functioning associated with impairments in adaptative behavior and manifested during the developmental period. Non-syndromic mental retardation patients do not manifest other clinical signs.