Abstract: The present disclosure provides compositions and methods of use for Type V CRISPR/Cas proteins. Type V CRISPR/Cas nucleases may be configured to bind nucleic acids in a sequence specific manner. Such a binding event may activate the Type V CRISPR/Cas nuclease for sequence non-specific trans-collateral cleavage of single-stranded nucleic acids. Provided herein are methods leveraging Type V CRISPR/Cas nuclease trans-collateral cleavage for identifying nucleic acid sequences.