Before revision:  Here, we disclose the metabolic backbone of Escherichia coli using  computationally predicted fluxes that maximize the growth rate in glucose  medium, and we contrast it with the backbone of Mycoplasma pneumoniae, a much URLanism.
After revision:  Here, we disclose the metabolic backbone of Escherichia coli using computationally predicted fluxes which maximize the growth rate in glucose medium, and we contrast it with the backbone of Mycoplasma pneumoniae, a much URLanism.