Fig. 3From: Natural combinatorial genetics and prolific polyamine production enable siderophore diversification in Serratia plymuthicaCharacterization of aerobactin biosynthesis. Biosynthetic operon and respective locus of suicide vector introduction (a), enzymatic processes leading to aerobactin biosynthesis (b), calculated and observed mass of aerobactin (c), ESI-MS of wild-type (d), and aerobactin extracted ion count for the wild-type and schI mutant (e)Back to article page