Shun-Hua Yeh

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Temperature-sensitive mutants of Streptomyces defective in initiation of chromosome replication were created by in vitro site-directed mutagenesis in the dnaA gene followed by gene replacement. When they were shifted to 39 degrees C replication in the mutants ceased in about 90 min but resumed on return to 30 degrees C. This allowed manipulations to achieve(More)
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