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Figure 2 | BMC Evolutionary Biology

Figure 2

From: Ancient intron insertion sites and palindromic genomic duplication evolutionally shapes an elementally functioning membrane protein family

Figure 2

Intron-Exon junctions in Halocynthia roretzi Inward K+ rectifier genomes. (A) Elementary IRK, TuIRKA genome. (B) G-protein activated IRK, TuGIRKAa genome. Black and red characters indicate the nucleotides in coding regions and the ones in the intronic regions, respectively. Gray triplet characters represented amino acid (AA) codes, which were not inserted with introns. The phase 0 intron s were found between those AA pairs. Green and sky blue triplet characters represented AA codes, which were inserted by phase 1 introns between the first and second nucleotides in the codons, and by phase 2 introns between the second and third nucleotides in the codons, respectively. Numbers at both sides of the nucleotide sequences are those assigned in the reported cDNAs. For another G-protein activated IRK, TuGIRKB genome, the intron-exon junctions are illustrated in an additional file [see Additional file 4].

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