Enables guanylate cyclase activity. Predicted to be involved in cGMP biosynthetic process and receptor guanylyl cyclase signaling pathway. Located in external side of plasma membrane. Is expressed in several structures, including genitourinary system; immune system; liver; musculature; and stomach. Orthologous to human GUCY2GP (guanylate cyclase 2G, pseudogene). [provided by Alliance of Genome Resources, Apr 2022]