sentence1: Calcium/calmodulin-cyclic 3 ' , 5 ' -dependent nucleotide phosphodiesterase 1A is an enzyme that in humans is encoded by the " PDE1A " gene .
sentence2: Calcium / calmodulin - dependent 3 ' ; , 5 ' ; -cyclic nucleotide phosphodiesterase 1A is an enzyme that is encoded in humans by the " PDE1A " gene .