Figure 1.
A phylogenetic tree for the porcine, mouse, and human NPY receptor sequences from transmembrane 1 to transmembrane 7 without the third intracellular loop (252–258 amino acids in total). The sequences were aligned using the CLUSTAL method and the tree constructed using the neighbor-joining method with the Caenorhabditis elegans NPY receptor-like sequence (GenBank accession no. AAA93419) as the outgroup. The strength of the tree topology was tested by bootstrap analysis with 1000 replications; the values are shown above each branch.
