A subunit of the anaphase-promoting complex whose primary function is to provide structural support for the catalytic and substrate-recognition modules of the complex. Apc4, along with Apc5, tethers the tetratricopeptide-coactivator binding subcomplex to the main structural subunit, Apc1.

Synonyms: 0, Apc4 Subunit, Anaphase-Promoting Complex-Cyclosome, Apc4 Subunit, Anaphase Promoting Complex, Apc4 Subunit, Anaphase-Promoting Complex, Anapc4, Apc4 Subunit, Anaphase Promoting Complex Cyclosome