The plasmid was transformed into competent DH5α Escherichia coli (E. coli) (Invitrogen, Life Technologies) which were than cultivated on solid LB agar media containing 100 μg × mL−1 ampicillin. Linear transformation cassettes were extracted from plasmids by digestion with restriction enzymes cutting on both sides of the desired insert and purification from gel (Fig. 1)