Multiple alignments of the UCP2 amino acid sequences of P. vachelli with those of other vertebrates. The dashes in amino acid sequence indicate the amino acid gaps that are necessary to align these sequences. Asterisks (*) indicated the highly conserved amino acids among all members of the proteins. Six transmembrane α-helix domains were underlined and labeled I-VI. Three mitochondrial carrier protein motifs were labelled by red box. Purine-nucleotide binding domain was indicated by grey shade. UCP signature motifs were shown in white letters on black. The protein sequences IDs were shown in supplemental Table II.