E3 ubiquitin-protein ligase which functions in cell cycle retarding in conjunction with the UBC4 and UBC13/MMS2 complex, 2 E2 ubiquitin conjugating enzymes (PubMed:18202552). Involved in nutritional control of the cell cycle (PubMed:15319434). Targets the G1 cyclin PCL1 for destruction (PubMed:23264631). Required for proper spindle positioning, likely regulating septin ring deposition at the bud neck (PubMed:15146058). S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine + [acceptor protein]-L-lysine = [E2 ubiquitin-conjugating enzyme]-L-cysteine + N(6)-ubiquitinyl-[acceptor protein]-L-lysine. Interacts with CDC123 (PubMed:15319434). Interacts with PCL1 (PubMed:23264631). Protein levels are regulated by nutrient status, being high under good nutrient conditions. UBC4-dependent autoubiquitination occurs at Lys-150, Lys-204, Lys-217, Lys-237, Lys-240, Lys-260, Lys-300, Lys-306, Lys-313 and Lys-317. UBC4-dependent autoubiquitination is responsible for DMA2 turnover. UBC13/MMS2-dependent autoubiquitination occurs at Lys-237 and Lys-306. Lys-204 and Lys-306 are also ubiquitinated in trans by DMA2 E3 ligase in association with UBC4. Present with 2790 molecules/cell in log phase SD medium. Belongs to the DMA1 family.