Predicted to enable GTP binding activity and GTPase activity. Acts upstream of or within adhesion of symbiont to host and defense response to other organism. Located in cytoplasmic vesicle and symbiont-containing vacuole membrane. Is expressed in meninges and thymus primordium. Orthologous to human GBP6 (guanylate binding protein family member 6). [provided by Alliance of Genome Resources, Apr 2022]