FUSION OF SITE-SPECIFIC RECOMBINASES FOR EFFICIENT AND SPECIFIC GENOME EDITING

The invention relates generally to the field of genome editing and provides DNA recombinases, which efficiently and specifically recombine genomic target sequences via the fusion of recombinase monomers. More specifically, the invention provides a fusion protein for efficient and specific genome editing, comprising a complex of recombinases comprising at least a first recombinase enzyme, a second recombinase enzyme and at least one linker, wherein said first recombinase enzyme and said second recombinase enzyme specifically recognize a first half-site and a second half-site of an upstream target site or a downstream target target site of a recombinase; wherein said first recombinase enzyme and said second recombinase enzyme are interconnected via a linker; and wherein said linker comprises or consists of an oligopeptide comprising 4 to 50 amino acids. The invention also discloses designer-recombinases, which catalyze the inversion of a DNA sequence present in the intlh regions on the human X chromosome. The invention further relates to nucleic acid molecules encoding said DNA recombinases and fusion proteins, as well as a pharmaceutical composition comprising said fusion proteins, DNA recombinases and nucleic acid molecules.