Fig. 7. Basolateral-targeting signals discussed in this paper. Numbers in parentheses indicate multiple signals in the same protein; FcRn and CD1d contain overlapping signals. The numbers of amino acids between the transmembrane (TM) regions and each sequence are shown. Amino acids that are essential elements of basolateral sorting signals or that enhance those signals are in bold. Abbreviations: LAP, lysosomal acid phosphatase; LDL-R, low-density lipoprotein receptor; Ii, MHC class II-associated invariant chain; SCF, stem cell factor.