Help:Gbrowse
To direct Gbrowse to a particular region of the chromosome, type a gene name, a short sequence (minimum of 15 bp), or a nucleotide range in the Landmark or Region box located near the top left of the page and click on the Search button. See the image below.

To enter a nucleotide range, type: MG16655:xx..xx. Where xx indicate the nucleotide positions.
The default entry point for this installation of Gbrowse is the E. coli K-12 MG1655 genome. However, it can display other genomes, including those of E. coli K-12 W3110, conjugative plasmids F and R100, and a number of bacteriophage. To access one of these other genomes, choose from the scroll down menu in the Data Source box.