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PUP3 | Beta 3 subunit of the 20S proteasome; involved in ubiquitin-dependent catabolism; human homolog is subunit C10. (205 aa) | ||||
PRE3 | Beta 1 subunit of the 20S proteasome; responsible for cleavage after acidic residues in peptides. (215 aa) | ||||
PUP1 | Beta 2 subunit of the 20S proteasome; endopeptidase with trypsin-like activity that cleaves after basic residues; synthesized as a proprotein before being proteolytically processed for assembly into 20S particle; human homolog is subunit Z. (261 aa) |