Fig. 6
From: High-level de novo biosynthesis of glycosylated zeaxanthin and astaxanthin in Escherichia coli
Production of astaxanthin glucosides and other carotenoids. A The content sums of glycosylated and unglycosylated carotenoids in different strains. The arrows refer to the two control strains (‘Ast’ and ‘GA01’). B Carotenoid contents produced in different strains. Blue: 0.03 mM IPTG; orange: 0.1 mM IPTG. ‘Ast’ strain is the parental astaxanthin strain without expressing crtX. ‘GA01’ is the control strain with the highest RBS strength of crtZ. C Mass spectra of astaxanthin and its glucosides