Neoschizomer
Neoschizomer
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Neoschizomer

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Neoschizomer

Neoschizomers are restriction enzymes that recognize the same nucleotide sequence, but cleave at different sites. The first restriction enzyme discovered to recognize a sequence is called the prototype, and others that recognize the same sequence are isoschizomers. Neoschizomers are a subset of isoschizomers.

For example, MaeII is the prototype enzyme for the sequence "ACGT", with the cleavage site A↓CGT. One of its neoschizomers, Tsp49I, also recognizes the sequence "ACGT", but cleaves at ACGT↓.

Another example is SmaI (CCC↓GGG), which is a neoschizomer of XmaI (C↓CCGGG).

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