Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 4tm5A 5k3wA 5k3wB 4tm5A 100 83 83 5k3wA 83 100 99 5k3wB 83 99 100 FOLD SIMILARITY (Z-SCORE) 4tm5A 5k3wA 5k3wB 4tm5A 50.7 31.5 31.2 5k3wA 31.5 52 48.1 5k3wB 31.2 48.1 51