A. Prevents
protein folding
B. Removing formed DNA
C. Cleaves DNA at
palindromic recognition site
D. Negative supercoiling
Answer isRestriction
enzymes Cut at Palindromic Sequences
Structure and function of type II restriction endonucleases
Abstract
More than 3000 type II restriction endonucleases
have been discovered. They recognize short, usually palindromic, sequences of
4–8 bp and, in the presence of Mg2+, cleave the DNA within or in
close proximity to the recognition sequence. The orthodox type II enzymes are
homodimers which recognize palindromic sites.[http://nar.oxfordjournals.org/content/29/18/3705.full]
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