Cas-Designer

A web tool for designing CRISPR guide RNAs

Cas-Designer takes a target sequence and lists every guide RNA that can be placed in it for the chosen nuclease, then ranks the candidates so the most promising ones are easy to spot. Each candidate is reported with its GC content, its out-of-frame score, and the number of potential off-target sites found in the selected genome.

Result will be notified by e-mail if provided.

PAM Type

52 PAM types available

Target Genome

Genomes

159 assemblies across 84 species

No prebuilt database for this genome + PAM yet

Target Sequence

Guides are extracted from your sequence and off-targets are searched with cas-offinder.

Usage: [start_position1]-[end_position1];[start_position2]-[end_position2];…

Example: 10-30;34-39;48-60