PRE9 [YGR135W]
Multicatalytic endopeptidase complex subunit Y13; Alpha 3 subunit of the 20S proteasome; the only nonessential 20S subunit; may be replaced by the alpha 4 subunit (Pre6p) under stress conditions to create a more active proteasomal isoform; Belongs to the peptidase T1A family.
Synonyms: PRE9, PRE9p, P23638, P23638p, PRS5 ...