NOVEL Cas ENZYME AND SYSTEM, AND USE THEREOF

A CRISPR-associated (Cas) protein, a fusion protein including the Cas protein, and a nucleic acid encoding either of the proteins are provided. The Cas protein is any one from the group consisting of a Cas protein having an amino acid sequence with at least 95% sequence identity with SEQ ID NO: 1 and basically retaining a biological function of SEQ ID NO: 1; a Cas protein having an amino acid sequence obtained through a substitution, a deletion, or an addition of one or more amino acids based on SEQ ID NO: 1 and basically retaining the biological function of SEQ ID NO: 1; and a Cas protein comprising an amino acid sequence shown in SEQ ID NO: 1.