Immunogen sequence: ECNIFSNIPP DGFKQIRQGM ITLILATDMA RHAEIMDSFK EKMENFDYSN EEHMTLLKMI LIKCCDISNE VRPMEVAEPW VDCLLEEYFM QSDREKSEGL PVAPFMDRDK VTKATAQIGF IKFVLIPMF. The protein encoded by this gene catalyzes the hydrolysis of cAMP and cGMP to their corresp