Synthesizes cyclic GMP (cGMP) from GTP (By similarity). Influences aerotaxis responses, aggregation and bordering behaviors (gathering around the edge of a bacterial lawn) in combination with other soluble guanylate cyclases. GTP = 3',5'-cyclic GMP + diphosphate Binds 1 or 2 heme groups per heterodimer. May be regulated by molecular oxygen. Probably not activated by nitric oxide (NO) (By similarity). Heterodimer; with other soluble guanylate cyclases. Expressed in a small number of neurons, corresponding to URX, AQR and PQR neurons. No response to varying levels of oxygen. Significantly reduced aggregation and bordering behaviors. There are two types of guanylate cyclases: soluble forms and membrane-associated receptor forms. Belongs to the adenylyl cyclase class-4/guanylyl cyclase family.