CRISPR Cas9 Bound to Guide RNA and Target DNA
This is a 3D print of CRISPR Ca9 is created in full-color sandstone. The model depicts CRISPR (purple) bound to its guide RNA (red) while editing its Target DNA (yellow and green). The subtle color variations in the CRISPR are associated with its bFactor, or atomic temperature. The darker the color, the less the protein moves with a cooler atomic temperature.
Clustered regularly interspaced short palindromic repeats (CRISPR, pronounced crisper) are segments of prokaryotic DNA containing short, repetitive base sequences. In a palindromic repeat, the sequence of nucleotides is the same in both directions. Each repetition is followed by short segments of spacer DNA from previous exposures to foreign DNA (e.g., a virus or plasmid). Small clusters of cas (CRISPR-associated system) genes are located next to CRISPR sequences.