Fig. 1.
Alternative splicing of Or46a, Or69a, and Gr28b. The gray boxes indicate the N-terminal exons that are unique to the differently spliced products, labeled with a letter designating the splice product, whereas the black boxes indicate the shared exons. In the case of Or46a, the encoded proteins share TM7; for Or69a, they share TM6 and -7; and for Gr28b, they share TM5-7. See Clyne et al. (2) for alternative splicing of Gr23a and -39a.