. "\"Any process that decreases the rate, frequency or extent of protein maturation by peptide bond cleavage.\" [GOC:dph, GOC:mah, GOC:tb]" . . "negative regulation of protein processing" . "negative regulation of protein maturation by peptide bond cleavage" . . . . . . . . . . . . . . . . . . . . . . . . . . . . .