- Cathepsin E deficiency induces a novel form of lysosomal storage disorder showing the accumulation of lysosomal membrane sialoglycoproteins and the elevation of lysosomal pH in macrophages. Yanagawa, M., Tsukuba, T., Nishioku, T., Okamoto, Y., Okamoto, K., Takii, R., Terada, Y., Nakayama, K.I., Kadowaki, T., Yamamoto, K. J. Biol. Chem. (2007)