Component of the anaphase-promoting complex/cyclosome (APC/C), a cell cycle-regulated E3 ubiquitin-protein ligase complex that controls progression through mitosis and the G1 phase of the cell cycle. The APC/C is thought to confer substrate specificity and, in the presence of ubiquitin-conjugating E2 enzymes, it catalyzes the formation of protein-ubiquitin conjugates that are subsequently degraded by the 26S proteasome. Acts as a positive regulator of the anaphase promoting complex (APC)-cyclosome. Involved in G1 cell cycle arrest in response to nitrogen starvation. Required for ubiquitination and degradation of the mitotic B-type cyclin, cdc13. The APC/C is composed of at least 13 subunits: apc1, apc2, nuc2, apc4, apc5, cut9, apc8, apc10, apc11, hcn1, apc13, apc14 and apc15. Interacts with nuc2. Belongs to the APC10 family.