FUNCTION: Has guanylyl cyclase on binding to the beta-1 subunit.; FUNCTION: Isoform 2 acts as a negative regulator of guanylyl cyclase activity as it forms non-functional heterodimers with the beta subunits....
                        FUNCTION: Has guanylyl cyclase on binding to the beta-1 subunit.; FUNCTION: Isoform 2 acts as a negative regulator of guanylyl cyclase activity as it forms non-functional heterodimers with the beta subunits.
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                        GO - Biological processes (BP): 
                        intracellular signal transduction [GO:0035556]; positive regulation of nitric oxide mediated signal transduction [GO:0010750]; signal transduction [GO:0007165]...
                        intracellular signal transduction [GO:0035556]; positive regulation of nitric oxide mediated signal transduction [GO:0010750]; signal transduction [GO:0007165]
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                        GO - Molecular function (MF): 
                        GTP binding [GO:0005525]; guanylate cyclase activity [GO:0004383]; heme binding [GO:0020037]...
                        GTP binding [GO:0005525]; guanylate cyclase activity [GO:0004383]; heme binding [GO:0020037]
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                        GO - Cellular component (CC): 
                        cytoplasm [GO:0005737]...
                        cytoplasm [GO:0005737]
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