Escherichia coli K12 genomic database.

We have compiled the genomic nucleic acid sequence data of Escherichia coli K12 available from the existing major data collections and from the literature. The collected data are structured as a database for easy access and analysis. The sequence segments in the database are ordered by genetic map position. Sequence redundancy has been completely removed by combining overlapping sequences; therefore, our sequence data are amenable to statistical analysis. We have specified with a plus or minus (+ or -) on which of the two DNA strands the segment exists. The database currently contains a total of 954,392 bp, which corresponds to about 20% of the entire genome size. The sequence data are available on request.