Tc1/mariner transposons in zebrafish. (A) Summary of the 10 autonomous transposons in the zebrafish genome. ORF, open reading frame; Tn, transposon; TIR, terminal inverted repeats; TSD, target site duplication. (B) Genomic coverage (5.41%) of Tc1/mariner transposons in the zebrafish genome. (C) Phylogenetic tree of the 10 transposons identified in this study with reference families of the Tc1/mariner transposons based on their transposases. Bootstrapped (1000 replicates) phylogenetic tree was inferred using the maximum likelihood method in IQ-TREE (37). Each sequence (with the exception of the DD39D subclasses) contained the name of the transposon, the gene sequence number corresponding to the transposon and the Latin abbreviation of the species in which the transposon was located. (D) Age distribution across the 10 Tc1/mariner subfamilies in zebrafish. The x-axis represents the insertion age (Mya, million years ago), and the y-axis represents the percentage of the genome composed of transposon families (%). (E) Transposon structure of ZB and SB transposon.
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