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Cleavage of Supercoiled DNA
Cleavage of Supercoiled DNA
Restriction
endonucleases cleave different DNA substrates with varying efficiency.
The supercoiled forms of pBR322, pUC19
and pLITMUS often require more units of enzyme
for complete digestion than lambda DNA. Below is a table reporting
the results of this comparison using standard reaction conditions.
The enzymes listed are those which have single sites on pBR322, pUC19
or the appropriate LITMUS vector.