... 5¢-GGGAATTCCATATGAGAGACAATATTTCCCGTTTATCAAATC-3¢ and 5¢-CCGCTCGAGTCATTACTAGGTTCCCTGTCCAGTGTTACC-3¢,andPDE1(Lys321–Thr620) was amplified with primers 5¢-GGGAATTCCATATGAAGAATGATCAATCTGGCTGCGGCGCAC-3¢ and 5¢-CCGCTCGAGTCATTACTAGGTTCCCTGTCCAGTGTTACC-3¢. ... explore the PDEs of parasites as potentialtargets for antiparasitic drugs. The African trypanosomeTrypanosoma brucei is the protozoon that causes the fatalhuman sleeping sickness, as well as Nagana, ... concentration, a cAMP is the total activity used in the enymatic reaction, a probe is the total radioactivity on the filter, and qcAMPand qAMPare the precipitation efficiencies of cAMP and AMP,...