This table lists gRNA sequences that have been experimentally validated for use in CRISPR experiments.

gRNA design tool with extensive selection of eukaryotic pathogen genomes (200+) that can predict gRNA targets in gene families, HDR oligonucleotide design, and batch processing for designing genome-wide gRNA libraries. PubMed PMID 28348817.

This tool helps design (10 different prediction scores), clone (primer design), and evaluate gRNAs, as well as predict off-targets, for CRISPR in 180+ genomes. PubMed PMID: 27380939.

sgRNA Scorer 2.0From the Church Lab: a tool that identifies putative target sites for S. pyogenes Cas9, S. thermophilus Cas9, or Cpf from your input sequence or list of sequences.

Quilt Universal guide RNA designerSearch for gRNAs via gene name or by genomic location. Database includes gRNAs from popular CRISPR libraries and from more than two million DNAse hypersensitive sites for intergenic guide RNAs in hg19, filtered for off-target effects.

From the Kim Lab, Cas-OFFinder identifies gRNA target sequences from an input sequence and checks for off-target binding. Currently supports: Drosophila, Arabidopsis, zebrafish, C. elegans, mouse, human, rat, cow, dog, pig, Thale cress, rice (Oryza sativa), tomato, corn, monkey (macaca mulatta).

Cas-Designer searches for targets that maximize knockout efficiency while having a a low probability of off-target effects. Cas-Designer integrates information from the Kim Lab's Cas-OFFinder and Microhomology predictor.

From the Qi Lab, a sgRNA design tool for genome editing, as well as gene regulation (repression and activation). Genome support for bacteria (E. coli, B. subtilis), yeast (S. cerevisiae), worm (C. elegans), fruit fly, zebrafish, mouse, rat, and human.

Identifies candidate sgRNA target sites by off-target quality. Validated for gene inactivation, NHEJ, and HDR. Reference genomes include Arabidopsis, C. elegans , sea squirt, cavefish, Chinese hamster, fruit fly, human, rice fish, mouse, silk worm, stickleback, tobacco, tomato, frog (X. laevis and X. tropicalis), and zebrafish.

Program for designing optimal gRNAs. Provides feedback on number of potential off-targets, target's genomic location, and genome annotation. Available genomes are human (hg19 & hg38), mouse (mm10), and yeast (strain w303).

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Addgene: CRISPR References and Information

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