Fig. 6: Comparison of three NDH-1L structures under different pH conditions.
a Comparison of NDH-PQ structure (NDHpH7) with previously reported two NDH-1L structures NDHpH6 and NDHpH8 (PDB codes: 6NBY and 6HUM) superposed on NdhA subunit. The subunits with structural differences are depicted as cartoons and labeled. The regions with evident differences among the three structures are circled with black, blue, and red boxes. b Comparison of the NdhI and NdhH subunits. The N-helix of NdhI and a helix of NdhH are highlighted as cartoons. The subunits similar in three NDH-1L structures are shown as surface mode (For clarity, only NDHpH7 structure is shown). c Comparison of NdhC subunits viewed from the stromal side. The TMH1-2 loop was not modeled in NDHpH6 structure. d Comparison of NdhG subunits viewed from the stromal side. Its C-terminal tail in NDHpH6 structure is almost completely modeled and interacts with the stromal region of NdhB. Color codes are the same as that in Fig. 1.
