Table 2 Summary of the major transposable elements (TEs) found in humans
From: Mobile DNA and the TE-Thrust hypothesis: supporting evidence from the primates
| Â | Family | Percentage of genome | Number in genome | Average length, bp | Maximum length, kb | Viable | Potentially autonomous |
|---|---|---|---|---|---|---|---|
Type I: retro-TEs | LTRa/ERVb | 8.3 | 443,000 | 510 | 10 | No | Yes (via reverse transcriptase) |
| Â | LINE1c | 16.9 | 516,000 | 900 | 6 | Some | Yes (via reverse transcriptase) |
| Â | LINE2 | 3.2 | 315,000 | 280 | 5 | No | Yes (via reverse transcriptase) |
| Â | Alu SINEd | 10.6 | 1,090,000 | 270 | 0.3 | Yes | No |
| Â | MIRe SINE | 2.2 | 393,000 | 150 | 0.26 | No | No |
| Â | SVAf SINE-like composite | 0.2 | 3,000 | 1,400 | 3 | Yes | No |
Type II: DNA-TEs | Many | 2.8 | 294,000 | 260 | 3 | No | Some (via transposase) |