Figure 2: Indirect topology assay of EmrE-C+ and HA-EmrE-C+.
From: Dual-topology insertion of a dual-topology membrane protein

(a) Diagram of the EmrE constructs used. (b) The growth of 10-fold dilutions of stationary phase cell culture expressing the HA-EmrE-C+ or EmrE-C+ constructs with a single topology EmrE mutant (HA-EmrElocked_in or HA-EmrElocked_out), spotted on agar plates in the presence of 190 μg ml−1 ethidium bromide.