Synonyms: negative regulation of protein polymer catabolism, downregulation of protein polymer degradation, negative regulation of protein polymer degradation, inhibition of protein polymer catabolism, downregulation of protein polymer catabolic process, down-regulation of protein polymer catabolic process, down regulation of protein polymer catabolism, downregulation of protein depolymerization, inhibition of protein polymer degradation, down-regulation of protein depolymerization, negative regulation of protein polymer breakdown, negative regulation of protein polymer catabolic process, downregulation of protein polymer catabolism, down regulation of protein polymer catabolic process, down regulation of protein depolymerization, down-regulation of protein polymer catabolism, down-regulation of protein polymer breakdown, inhibition of protein polymer breakdown, downregulation of protein polymer breakdown, down-regulation of protein polymer degradation, down regulation of protein polymer degradation, inhibition of protein polymer catabolic process, down regulation of protein polymer breakdown