Escherichia coli Metabolism metabolism Biochemical Phenomena Carbon Carbon catabolite repression Chain length Chains length Constraint-based modeling Constraint-based models Constraints-based modeling E-Flux E-flux Enzyme activity Enzymes Esterase Esters Gene expression Gene expression integration Genes Genes expression Hexyl acetate Hydrolysis Medium-chain-length α,ω-diol Medium-chain-length α,ω-diols Metabolic Networks and Pathways Metabolic flux distribution Metabolic reconstruction Metabolic versatility Models, Biological