Predicted to enable GTP binding activity; GTPase activity; and protein homodimerization activity. Acts upstream of or within adhesion of symbiont to host; cellular response to interferon-beta; and defense response to other organism. Located in cytoplasmic vesicle; cytosol; and symbiont-containing vacuole membrane. Orthologous to human GBP4 (guanylate binding protein 4) and GBP7 (guanylate binding protein 7). [provided by Alliance of Genome Resources, Apr 2022]