As far as I now,
class II restriction enzymes are homodimers, which bind face to face.
The "normal" B-DNA-form has got about 3.6 bp/turn, i.e. both monomers
recognize the same DNA sequence.
|---><----|
|---><----|
C G
| T T |
| | T T | |
| | |x| | |
| | A A | |
| A A |
G G
Lars Anders Carlson wrote:
> Could anyone give a reasonable explanation why class II restriction
> enzymes have come to recognise palindromic sequences?
>> thanks in advance,
>> Lars Anders Carlson
