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Sixteen single point mutations near the beginning of the lacZ gene have been isolated and their effect on lacZ expression has been measured. Five mutations were obtained that alter a potential stem-and-loop structure in the messenger RNA that masks the initiation codons. Formation of this stem-and-loop is a result of transcription of DNA sequences(More)
A survey of 40 protein and nucleic acid chemistry facilities has provided data about the capabilities of core facilities and the cost of the services they provide. Approximately 43% of the +158,000 average annual operating budget for a typical university facility is derived from service charges. After correcting for the various degrees of subsidization of(More)
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