The specific lycopene production, growth ability, lycopene level of strains, and integrated positions of lycopene expression pathway. A) The specific lycopene production of Escherichia coliDH411, D411E, D411S, D411G, D411ES, D411EG, and D411SG. B) The specific lycopene production, growth ability, and lycopene level of D412SS, D412SG, D422SG, D432SG, and D442SG. C) Four positions (8th nonessential region, 44th nonessential region, 58th nonessential region, and lpxM site) were chosen for integration of lycopene expression pathway respectively. D) The specific lycopene production, growth ability, and lycopene level of D414S, D414SS, D414SG, and DH416.