Fig. 3From: Identification and functional analysis of the geranylgeranyl pyrophosphate synthase gene (crtE) and phytoene synthase gene (crtB) for carotenoid biosynthesis in Euglena gracilis Color complementation experiments in E. coli with the P. ananatis carotenoid synthetic gene cluster. a E. coli carrying pACCAR25ΔcrtE [22] with pETDuet-1 (vector control) or pET-EgcrtE. b E. coli cells carrying pACCAR25ΔcrtB [23] with pETDuet-1 (vector control) or pET-EgcrtB. E. coli strain BL21(DE3) was used as the host. Data are representative of at least eight E. coli transformants with similar resultsBack to article page