Predicted to enable GTPase activator activity. Predicted to be involved in actin cytoskeleton organization and regulation of Rho protein signal transduction. Predicted to act upstream of or within several processes, including endothelial tube lumen extension; negative regulation of cell migration involved in sprouting angiogenesis; and negative regulation of sprouting angiogenesis. Predicted to be located in cytoplasm. Orthologous to human STARD13 (StAR related lipid transfer domain containing 13). [provided by Alliance of Genome Resources, Apr 2022]