HSPA9 and neoplasm: After molecular dissection of the mortalin-p53 interaction, mortalin was found to bind to the p53 C-terminal tetramerization (TET) domain (323 ~ 355 amino acids) in cancer cells but not in normal cells, and this observation was applied to develop inhibitors targeting cytoplasmically sequestered p53-mortalin and reactivate the tumor-suppressive activities of p53 via shuttling it back to the nucleus.