Enables guanylate cyclase activity. Predicted to be involved in cGMP biosynthetic process and intracellular signal transduction. Predicted to act upstream of or within positive regulation of nitric oxide mediated signal transduction. Predicted to be located in cytosol. Orthologous to human GUCY1A2 (guanylate cyclase 1 soluble subunit alpha 2). [provided by Alliance of Genome Resources, Apr 2022]