Jingsong Gu

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A 1330-bp DNA sequence with two XcmI cassettes was inserted into pUC18 to construct an efficient XcmI T-vector parent plasmid, pYEMF. The large size of the inserted DNA fragment improved T-vector cleavage efficiency, and guaranteed good separation of the molecular components after restriction digestion. The pYEMF-T-vector generated from parent plasmid pYEMF(More)
With a novel and universal strategy for the cloning of multiple DNA fragments, a complex synthetic vector (pVEC100), harboring the target DNA fragments in conventional 100-bp DNA ladder, was constructed for efficient and large-scale production of 100-bp DNA marker through bacteria fermentation, plasmid extraction and restrictive digestion. Since the(More)
An enzyme-coupled colorimetric assay for S-adenosylmethionine-dependent methyltransferase (MT) was established to characterize the enzymatic identity of YabC protein from Escherichia coli. Results showed that the MT activity of YabC is able to be effectively detected with this coupling assay system when filamentous cell lysates from an S-adenosylmethionine(More)
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