Fig. 2. A rooted phylogenetic tree of the vertebrate Kir channel family based on
the amino acid sequences. KirBac3.1 was used as an outgroup. Numbers at the
nodes indicate the bootstrap values for the clade of 1000 replications.
Arrowheads indicate positions of the crucian carp Kir2 proteins in the tree.
Predicted inward-rectifier potassium channels of the zebrafish are indicated
with an asterisk. GenBank accession numbers for the mouse (m) Kir sequences
are the same as in Fig. 1B and
those for zebrafish (z) are as follows: Kir1.1, NM_001045169; Kir2.1,
XM_687101