Guanylate cyclase involved in the production of the second messenger cGMP (By similarity). May be involved in sensitivity to quinine by regulating egl-4 activity through the production of cGMP (PubMed:23874221). Promotes the calcium flux to the cytoplasm in ASJ sensory neurons upon removal of a nitric oxide (NO) stimulus and is thereby involved in the behavioral avoidance response to NO-producing organisms like P.aeruginosa (PubMed:30014846). GTP = 3',5'-cyclic GMP + diphosphate Expressed bilaterally in ASK, ASI and ASJ sensory neurons. The protein kinase domain is predicted to be catalytically inactive. Belongs to the adenylyl cyclase class-4/guanylyl cyclase family.