Fig. 3

The interaction of DsbA1 with Gcd and its derivatives in vivo. DsbA1, Gcd and its derivatives were fused with the T25 (a) and T18 (b) domains of CyaA from Bordetella pertussis, respectively, and the T25, T18 fusion pairs were transformed into E. coli BTH101 cells. Cultures were grown at 30 °C for 8 h and the β-galactosidase activities were then measured using Miller method [23]. The experiments were performed in triplicate, and the mean values ± SD are indicated. * indicates P < 0.05