Tubercidin is a toxic adenosine analog with antiviral, antitrypanosomal, and antifungal functions. Inhibits multiple metabolic processes which includes: RNA processing, nucleic acid synthesis, protein synthesis, and methylation of tRNA through intracellular incorporation into nucleic acids. Acts as a plant antifungal, inhibits mammalian SAHH (SAH hydrolase), and blocks purine biosynthesis in Candida famata.