CRISPR SNA at work (IMAGE) Northwestern University Caption CRISPR RNP (CRISPR SNA at work: in complex with single-guide RNA (red), CRISPR SNA can recognize and cleave the gene target of interest (yellow)). The complexed form of Cas9 protein and single-guide RNA is referred to as the ribonucleoprotein (RNP). Credit Please credit to Mirkin Lab / Northwestern University Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.