. "\"Any process that activates or increases the frequency, rate or extent of the breakdown of a protein or peptide by hydrolysis of its peptide bonds, initiated by the covalent attachment of ubiquitin, and mediated by the proteasome.\" [GOC:mah]" . . "positive regulation of proteasomal ubiquitin-dependent protein catabolic process" . "up regulation of proteasomal ubiquitin-dependent protein catabolic process" . "up-regulation of proteasomal ubiquitin-dependent protein catabolic process" . "upregulation of proteasomal ubiquitin-dependent protein catabolic process" . . . . . "activation of proteasomal ubiquitin-dependent protein catabolic process" . "stimulation of proteasomal ubiquitin-dependent protein catabolic process" .