The discovery of restriction enzymes began with a hypothesis. In the 1960s, Werner Arber observed a dramatic change in the bacteriophage DNA after it invaded these resistant strains of bacteria ...

DNA restriction enzymes, with their widespread applications in many diagnostic procedures (e.g., RFLP, PCR, etc), are the very cornerstone of recombinant DNA technology. Unfortunately, their ...

A new method for mapping torsion provides insights into the ways that the genome responds to the torsion generated by RNA polymerase II.

“In the early days, you couldn’t do much with DNA because it was a very large molecule,” Roberts recalled. “As soon as the Type II restriction enzymes were discovered—and HindII in particular—it was ...

Various types of endonucleases – enzymes that can cut DNA – were already known before CRISPR-Cas9. The discovery of restriction enzymes in the early 1970s heralded a new age in molecular biology.

In step 2, the gene fragment is integrated into a circular piece of DNA, called a plasmid, which is the main delivery vehicle into the cell and contains an antibiotic resistance gene for plasmid ...