YDL008W APC11 SGDID:S000002166, Chr IV from 433497-433994, Genome Release 64-1-1, Verified ORF, "Catalytic core subunit of the Anaphase-Promoting Complex/Cyclosome (APC/C), which is a ubiquitin-protein ligase required for degradation of anaphase inhibitors, including mitotic cyclins, during the metaphase/anaphase transition; contains a RING-H2 domain that is required for activity"