Endonuclease IV molecule 插畫檔

Endonuclease IV molecule. Molecular model of the endonuclease IV restriction enzyme EcoRV (beige) bound to a cleaved section of DNA (deoxyribonucleic acid, blue, red and green). Restriction enzymes, also known as restriction endonucleases, recognise specific nucleotide sequences and cut the DNA at these sites. They are found in bacteria and archaea and are though to have evolved as a defence against viral infection. Endonuclease IV is involved in base excision repair of DNA.