Part of the physical map of the E. coli genome, obtained by sequencing

A linear scale drawing of a sequenced 5-minute section of the 100-minute 1990 E. coli linkage map. The parentheses and asterisks indicate markers for which the exact location was unknown at the time of publication. Arrows above genes and groups of genes indicate the direction of transcription.

[Data from B. J. Bachmann, “Linkage Map of Escherichia coli K-12, Edition 8,” Microbiol. Rev. 54, 1990, 130–197.]