We have discovered a new restriction endonuclease, MfeI, in nuclear extracts from T cells contaminated with Mycoplasma fermentans. This endonuclease was identified while studying proteins binding to the interleukin-2 receptor alpha chain gene promoter. MfeI cuts at the recognition sequence C'AATTG generating EcoRI compatible cohesive ends. Potential applications are discussed.
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Halden et al. (1989) studied this question.
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