Multiple species amino acid alignment of the AMN cytoplasmic domain. Alignment of human (GenBank accession no. NP 112205), mouse (accession no. NP 291081), rat (accession no. XP 234547), and dog (accession no. AY 368152) AMN sequences (single-letter amino acid code) was performed by web-based software.³³  Residues highlighted in black are identical in all 4 species. Two conserved copies of the internalization signal FXNPXF are underlined.