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. 2017 Nov 1;3(11):eaao4119. doi: 10.1126/sciadv.aao4119

Fig. 5. Model for the Na+-induced assembly and disassembly of the MotPS stator.

Fig. 5

Structural transitions of MotSC between the unfolded and folded states occur in a Na+-dependent manner. The plug region of MotSC is detached from the TM Na+ channel formed by the TM helices of MotP and MotS, followed by partial unfolding of the N-terminal portion of the PGB domain of MotSC, causing a 5-nm extension of the PGB domain from the TM domain of MotPS to reach the peptidoglycan layer, allowing MotPS to become an active Na+-type stator unit.