crispr-cas9 gene editing complex from streptococcus pyogenes, 3d rendering. the cas9 nuclease protein uses a guide rna sequence to

crispr cas cas9 clustered regularly interspaced short palindromic repeats dna rna virus bacteria gene resistance editing associated nuclease genome pdb4un3 streptococcus pyogenes transactivating sgrna drug cure therapy biotech interference structure peptide protein 3d rendering amino acid molecule polypeptide polymer atoms science scientific disease health molecular model