The present invention relates to artificial molecular complexes comprising at least one site-specific nuclease and directly interacting therewith at least one repair template docking domain, said repair template docking domain interacting with at least one repair template nucleic acid sequence. The artificial complex can further comprise at least one interaction domain. The artificial molecular complexes are configured to mediate repair of a DNA target sequence in a prokaryotic or eukaryotic organism with high precision in a targeted way and can thus be used for genome engineering in a prokaryotic or a eukaryotic cell or organism, or editing of a viral genome. Further provided are methods of modifying at least one DNA target sequence in a prokaryotic or eukaryotic cell or a viral genome, e.g., for trait development, or for treating a disease. Additionally, there is provided a method for manufacturing a plant, plant cell, a plant material, or a derivative, or a progeny thereof comprising or edited by at least one artificial molecular complex.
