PMC:3396637 / 7464-8839 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/3396637","sourcedb":"PMC","sourceid":"3396637","source_url":"https://www.ncbi.nlm.nih.gov/pmc/3396637","text":"We subsequently tried to find the major TE families that influence intron size in each vertebrate species or lineages by calculating the fraction of introns possessing a particular RS class (Table 1). First, SINEs are supreme in overall abundance among all TEs in mammals. In the primates, Alu and MIR are most abundant. In the two small rodents, mouse and rat, B1, B4, and B2 are most abundant, whereas in guinea pig, the larger rodent of the group, B1 and B4 are most abundant. Second, for the four most abundant TE families in each species, the four large mammals, cow, panda, horse, and elephant, share MIR, L1, and L2, as well as other species-specific TEs that include BovA for cow, tRNA-Lys for panda, and SINE:SINEs that are specific for horse and elephant. MIR is abundant in all twelve mammals; opossum and platypus rank as the top two but the three rodents appear behind all the rest mammals. Third, the three lower vertebrates, chicken, anole, and frog, have CR1, Sauria, and Harbinger as the most abundant TEs, respectively. Zebrafish appears to have the most diverse DNA transposons and they are all quite abundant: DNA:DNA, hAT, hAT-Charlie, TcMar-Tc1, En-Spm, hAT-Ac, and Harbinger. Fourth, concerning satellite sequence classes, we found that all SSs are prevalent in the sixteen vertebrates but mouse, rat, zebrafish, and opossum are more SS-rich among all.","tracks":[]}