Extended Data Fig. 4. Genomic structure and alternative splicing of fester and FcoR genes.

a, Fester genes exhibit two regions with alternative splicing. The first region is between the Sushi domain and the first transmembrane domain. The second region is located in the cytoplasmic region. Exons encoding the transmembrane domains are highlighted in colors. b, FcoR genes exhibit alternative splicing in the extracellular and intracellular regions. Asterisks represent stop codons. Intron retentions are indicated with blue horizontal lines. Signal peptide: SP. I, II, and III: First, second and third transmembrane domains, respectively.