The Cas9 nuclease and requirements for RNA-guided genome-editing. Cas9 is the nuclease guided by the crRNA and tracrRNA (or trans-activating crRNA) to cleave specific DNA sequences (Deltcheva et al.2011). A guide RNA (gRNA) can be designed to include a hairpin that mimics the tracrRNA-crRNA complex (Jinek et al. 2012).he Cas9 nuclease and requirements for RNA-guided genome-editing. Cas9 is the nuclease guided by the crRNA and tracrRNA (or trans-activating crRNA) to cleave specific DNA sequences (Deltcheva et al. 2011).
Solid Surface Bathroom Countertops: These countertops are made from synthetic materials, so they are manufactured in many colors and styles. The pros of solid surface countertops include the choices, strength and a non-porous surface that cleans up quickly.
Even if you are not familiar with quartz as a name for this material, you may be familiar with its more prosaic name: engineered stone counters. Quartz is a sexy word, as it implies luster, translucence, and hardness. While quartz countertops do contain quartz, the term is more for marketing than anything else. In simple terms, quartz counters are 93% made up of stone-like materials and 7% of binders that are either plastic-like (polymeric) or cement-based. Of those stone-like materials, quartz is only one of many substances.