... density-gradient centrifugation. Each fraction was assayed for activities of NADPH-cytochrome c reductase (an ER marker) and a- mannosidase II (a Golgi marker). Proteins in every other fraction were analyzed ... Inoue1,2,*, Kazunori Tanaka1, Hiromitsu Tanaka2, Kohei Ohtomo1, Toshio Kanda2,Morikazu Imamura2, Guo-Xing Quan2, Katsura Kojima2, Tetsuro Yamashita3, Tasuku Nakajima4,Hideharu Taira3, ... fhx/P25molecule in the elementary unit based on the observationthat biotinylated ConA was accessible to the N-linkedoligosaccharide chains of fhx/P25 only after the treatment of the elementary unit with...