A nucleic acid cleaving agent having a cleaving activity specific to a desired cleavage site in a nucleic acid such as large DNA, which comprises (1) a nucleic acid cleaving moiety, and (2) at least two zinc finger proteins bound to the nucleic acid cleaving moiety, wherein at least one of the zinc finger proteins can specifically bind to a nucleotide sequence located upstream from the target cleavage site, and at least one of the remaining zinc finger proteins can specifically bind to a nucleotide sequence located downstream from the target cleavage site.
