PUTRESCINE N-METHYLTRANSFERASE, RECOMBINANT DNA MOLECULE FOR CODING PUTRESCINE N-METHYLTRANSFERASE AND TRANSGENIC TOBACCO PLANT CHANGED IN NICOTINE CONTENT

摘要

There is provided highly purified tobacco putrescine N-methyltransferase, a process for its purification, and production of PMT DNA sequence. The purification process includes the step of applying a tobacco root extract to an anion exchange medium and specifically eluting putrescine N-methyltransferase with an elution buffer comprising putrescine.