TLC analysis of total lipid extracts from E. coli MPS11 derivative strains. Cultures of E. coli were grown as described in Methods, and expression of Sco0958 and Lppβ enzymes was induced with IPTG and L-arabinose, respectively. pBAD33 was used as an empty plasmid control. Lipid pattern obtained after processing 1 mg cell dry mass visualized by Cu-phosphoric staining. L-Ara, L-arabinose; TAG, triacylglycerol; FA, fatty acids; DAG, diacylglycerol.