“…These results confirm and extend conclusions that we and others presented previously, that N-glycans are not necessary for apical sorting of influenza virus hemagglutinin (Roth et al, 1979;Green et al, 1981). Our findings are also consistent with reports that apical sorting of several other proteins is independent of N-glycosylation (Lisanti et al, 1989(Lisanti et al, , 1990Ullrich et al, 1991;Ragno et al, 1992;Gonzalez et al, 1993), and that many N-glycosylated proteins are poorly sorted in MDCK cells (Stephens and Compans, 1986;Soole et al, 1992;Geffen et al, 1993;Haller and Alper, 1993;Thomas et al, 1993;Le Gall et al, 1997). However, these data are not inconsistent with the possible involvement of N-glycans in sorting of a subset of apical proteins (Urban et al, 1987;Kitigawa et al, 1994;Scheiffele et al, 1995).…”