Why would you modify E coli for this? Use existing gut friendly bacteria and start from those. There's a wealth of material on the genetics of probiotics.
Um... E.coli is an existing gut friendly bacteria, one of the most common ones present in at least 90% of all humans' gut biome. There are only some specific strains which are pathogenous.
Um... E.coli is an existing gut friendly bacteria, one of the most common ones present in at least 90% of all humans' gut biome. There are only some specific strains which are pathogenous.