Question

Type 2 restriction enzyme

Answer 1

Type II Restriction Enzymes

• A type II restriction endonuclease recognises a specific sequence in the DNA.

• It cuts the DNA at the recognised sequnce.

• So the cutting is sequence specific.

• At present about 350 type II restriction endonucleases are isolated from various bacterial strains.

• They are named using the first letter of the genus name.

• The first two letters are of species name and the first letter of the strain from which the enzyme isolated.