The hydrolysis of a peptide bond or bonds within a protein as part of the chemical reactions and pathways resulting in the breakdown of a protein by individual cells.
Synonyms:
exact_synonym:
peptidolysis involved in cellular protein catabolic process; peptidolysis involved in cellular protein catabolism; proteolysis involved in cellular protein catabolic process
related_synonym:
peptidolysis during cellular protein catabolic process; peptidolysis during cellular protein catabolism; proteolysis during cellular protein catabolic process; proteolysis during cellular protein catabolism