CRISPR-Cas9 gene editing complex. Computer illustration showing the molecular structure of the CRISPR-Cas9 gene editing complex from Streptococcus pyogenes. The CRISPR-Cas9 protein is used in genome engineering to cut DNA (deoxyribonucleic acid). It uses a guide RNA (ribonucleic acid) sequence to cut DNA at a complementary site. The Cas9 protein is represented by the blue ribbon, the DNA is shown in red, and the single-guide RNA in orange.
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