In this thesis the evolutionary background, function and localization of the domesticated transposase DAYSLEEPER are described. We found that DAYSLEEPER-like genes can be found in angiosperms, but... Show moreIn this thesis the evolutionary background, function and localization of the domesticated transposase DAYSLEEPER are described. We found that DAYSLEEPER-like genes can be found in angiosperms, but not in lower plants. We also found that DAYSLEEPER interacts with several proteins and is probably involved in regulating protein degradation through involvement in ubiquitin-mediated protein degradation. Show less