RESTRICTION ENZYMES
RESTRICTION ENZYMES Restriction enzymes are help in cutting of DNA into smaller fragments. Different restriction enzymes acknowledge and cut different DNA sequences. Restriction enzymes are also known as molecular scissor. WHERE DO RESTRICTION ENZYMES COME FROM? Restriction enzymes are found in bacteria. Bacteria use restriction enzymes to kill viruses the enzyme attack the viral DNA and break it into useless fragments. HOW DO RESTRICTION ENZYMES WORK? Restriction enzymes works by shape matching, when it comes into contact with DNA sequences with a shape, that matches a part of the enzyme, called DNA sequences, it wraps around the DNA and causes a break in both strands of the DNA molecule. Each restriction enzymes recognises a different and specific recognition site, or DNA sequences. Recognition sites are usually only short 4-8 nucleotides. WHEN ARE RESTRICTION ENZYMES ARE USED? Restriction enzymes are a basic tool...
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