RAMON ANDRADE 3DCIENCIA / SCIENCE PHOTO LIBRARY RAMON ANDRADE 3DCIENCIA / SCIENCE PHOTO LIBRARY
CRISPR-Cas9 gene editing complex. Illustration of the molecular structure of the CRISPR-Cas9 gene editing complex from the Streptococcus pyogenes bacterium. 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 shown in blue. The guide RNA is red, and the double-strands of the DNA are yellow and pink. The target DNA strand is yellow, and the non-target DNA strand is pink. CRISPR (Clustered Regularly Interspersed Palindromic Repeats) is a bacterial adaptive immunity system.
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