FUNCTION: Specific GEF for RhoA activation. Does not activate RAC1 or CDC42. Regulates vascular smooth muscle contractility. Negatively regulates excitatory synapse development by suppressing the synapse-promoting activity of EPHB2. {ECO:0000269|PubMed:12775584}....FUNCTION: Specific GEF for RhoA activation. Does not activate RAC1 or CDC42. Regulates vascular smooth muscle contractility. Negatively regulates excitatory synapse development by suppressing the synapse-promoting activity of EPHB2. {ECO:0000269|PubMed:12775584}.View more >>
GO - Biological processes (BP): activation of GTPase activity [GO:0090630]; negative regulation of synapse maturation [GO:2000297]; positive regulation of stress fiber assembly [GO:0051496]; regulation of catalytic activity [GO:0050790]; regulation of small GTPase mediated signal transduction [GO:0051056]; retina vasculature morph...activation of GTPase activity [GO:0090630]; negative regulation of synapse maturation [GO:2000297]; positive regulation of stress fiber assembly [GO:0051496]; regulation of catalytic activity [GO:0050790]; regulation of small GTPase mediated signal transduction [GO:0051056]; retina vasculature morphogenesis in camera-type eye [GO:0061299]View more >>
GO - Molecular function (MF): GTPase activator activity [GO:0005096]; guanyl-nucleotide exchange factor activity [GO:0005085]...GTPase activator activity [GO:0005096]; guanyl-nucleotide exchange factor activity [GO:0005085]View more >>
GO - Cellular component (CC): cytoplasm [GO:0005737]; cytosol [GO:0005829]; dendrite [GO:0030425]...cytoplasm [GO:0005737]; cytosol [GO:0005829]; dendrite [GO:0030425]View more >>