What do restriction endonuclease enzymes do ?
In molecular biology , the restriction endonuclease BsobI / AvaI family of enzymes includes the AvaI and BsoBI restriction endonucleases from " Anabaena variabilis " and " Bacillus stearothermophilus " , both of which recognise the double - stranded sequence CYCGRG ( where Y = T / C , and R = A / G ) and cleave after C-1.