Abstract:A modified method of 3′RACE can rapidly amplify 3′cDNA end by using one-step PCR with a specific primer and Oligo_dT primer. We successfully cloned the 3′cDNA ends of Suaeda liaotungensis choline monooxygenase using this method. Compared with the typical 3′RACE, one_step PCR has the advantages of rapid, efficient and inexpensive.