negative regulation of cellular process | negative regulation of proteolysis | cellular process | regulation of proteolysis | negative regulation of cellular metabolic process | regulation of cellular process | regulation of metabolic process | cellular component organization | negative regulation of metabolic process | negative regulation of catalytic activity | regulation of peptidase activity | regulation of catalytic activity | negative regulation of peptidase activity | regulation of nitrogen compound metabolic process | regulation of cellular protein metabolic process | regulation of cellular metabolic process | regulation of protein metabolic process | negative regulation of cellular protein metabolic process | negative regulation of protein metabolic process | negative regulation of molecular function | organelle organization | negative regulation of hydrolase activity | chromosome organization