Figure 4. Phylogenetic tree of mammalian KIR3DL homologous sequences.

Sixteen equid KIR3DL amino acid sequences were deduced from inferred haplotypes of genomic sequences (Accession numbers in Table S3). The tree was constructed by using the neighbor-joining method [39]. The evolutionary distances were computed using the p-distance method [41]. The analysis involved 36 sequences. All ambiguous positions were removed for each sequence pair. There were a total of 619 positions in the final dataset. Evolutionary analyses were conducted in MEGA5 [26].