Title |
CCTop: An Intuitive, Flexible and Reliable CRISPR/Cas9 Target Prediction Tool
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Published in |
PLOS ONE, April 2015
|
DOI | 10.1371/journal.pone.0124633 |
Pubmed ID | |
Authors |
Manuel Stemmer, Thomas Thumberger, Maria del Sol Keyer, Joachim Wittbrodt, Juan L. Mateo |
Abstract |
Engineering of the CRISPR/Cas9 system has opened a plethora of new opportunities for site-directed mutagenesis and targeted genome modification. Fundamental to this is a stretch of twenty nucleotides at the 5' end of a guide RNA that provides specificity to the bound Cas9 endonuclease. Since a sequence of twenty nucleotides can occur multiple times in a given genome and some mismatches seem to be accepted by the CRISPR/Cas9 complex, an efficient and reliable in silico selection and evaluation of the targeting site is key prerequisite for the experimental success. Here we present the CRISPR/Cas9 target online predictor (CCTop, http://crispr.cos.uni-heidelberg.de) to overcome limitations of already available tools. CCTop provides an intuitive user interface with reasonable default parameters that can easily be tuned by the user. From a given query sequence, CCTop identifies and ranks all candidate sgRNA target sites according to their off-target quality and displays full documentation. CCTop was experimentally validated for gene inactivation, non-homologous end-joining as well as homology directed repair. Thus, CCTop provides the bench biologist with a tool for the rapid and efficient identification of high quality target sites. |
X Demographics
Geographical breakdown
Country | Count | As % |
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United States | 4 | 15% |
France | 3 | 11% |
Egypt | 1 | 4% |
Austria | 1 | 4% |
Belgium | 1 | 4% |
Canada | 1 | 4% |
Venezuela, Bolivarian Republic of | 1 | 4% |
Spain | 1 | 4% |
Australia | 1 | 4% |
Other | 0 | 0% |
Unknown | 13 | 48% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 15 | 56% |
Scientists | 12 | 44% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 2 | <1% |
Chile | 1 | <1% |
France | 1 | <1% |
Germany | 1 | <1% |
United Kingdom | 1 | <1% |
Canada | 1 | <1% |
Argentina | 1 | <1% |
Finland | 1 | <1% |
Denmark | 1 | <1% |
Other | 3 | <1% |
Unknown | 813 | 98% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 175 | 21% |
Student > Master | 125 | 15% |
Researcher | 118 | 14% |
Student > Bachelor | 115 | 14% |
Student > Doctoral Student | 34 | 4% |
Other | 82 | 10% |
Unknown | 177 | 21% |
Readers by discipline | Count | As % |
---|---|---|
Biochemistry, Genetics and Molecular Biology | 272 | 33% |
Agricultural and Biological Sciences | 226 | 27% |
Medicine and Dentistry | 26 | 3% |
Immunology and Microbiology | 24 | 3% |
Neuroscience | 23 | 3% |
Other | 63 | 8% |
Unknown | 192 | 23% |