Abstract
We have developed a strategy for efficient sequence analysis of the genome of E. coli K-12 using insertions of a Tn5-derived mini-transposon into overlapping ordered lambda phage clones to provide universal primer-binding sites, and PCR amplification of DNA segments adjacent to the insertions. Transposon-containing clones were selected by blue plaque formation on a dnaBamber lacZamber E. coli strain. Insertion points every 0.5-1 kb were identified by 'analytical PCR' and segments between the transposon inserts and phage arms were amplified by 'preparative PCR' using one biotinylated and one non-biotinylated primer. Single strands of amplified DNA fragments were coupled to Streptoavidin-coated paramagnetic beads (Dynabeads M280) through their biotin tails, purified magnetically, and used as templates for fluorescence-based automatic nucleotide sequencing.
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Selected References
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