Figure 4. The N-terminal region of Cpx plays a role in restructuring the trans-SNAREpin.
Both N-terminal Cpx mutants (a) M5E/K6E and (b) Cpx-(27–134) can pull the high FRET population down to mid FRET for CC. However, they are incapable of pushing the low FRET population to the mid FRET region. All experiments were independently conducted four times. Total of 704 and 494 traces were analysed for (a) and (b) respectively.