Cas-OFFinder: a fast and versatile algorithm that searches for potential off-target sites of Cas9 RNA-guided endonucleases - PubMed (original) (raw)
Cas-OFFinder: a fast and versatile algorithm that searches for potential off-target sites of Cas9 RNA-guided endonucleases
Sangsu Bae et al. Bioinformatics. 2014.
Abstract
Summary: The Type II clustered regularly interspaced short palindromic repeats (CRISPR)/Cas system is an adaptive immune response in prokaryotes, protecting host cells against invading phages or plasmids by cleaving these foreign DNA species in a targeted manner. CRISPR/Cas-derived RNA-guided engineered nucleases (RGENs) enable genome editing in cultured cells, animals and plants, but are limited by off-target mutations. Here, we present a novel algorithm termed Cas-OFFinder that searches for potential off-target sites in a given genome or user-defined sequences. Unlike other algorithms currently available for identification of RGEN off-target sites, Cas-OFFinder is not limited by the number of mismatches and allows variations in protospacer-adjacent motif sequences recognized by Cas9, the essential protein component in RGENs. Cas-OFFinder is available as a command-line program or accessible via our website.
Availability and implementation: Cas-OFFinder free access at http://www.rgenome.net/cas-offinder.
Contact: baesau@snu.ac.kr or jskim01@snu.ac.kr.
Figures
Fig. 1.
(A) The scheme of Cas-OFFinder. (B) The workflow of Cas-OFFinder. (C) Running time per target site as a function of the number of input target sites via CPU (black squares) and GPU (red circles)
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