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. 2023 Feb 1;192(1):170–187. doi: 10.1093/plphys/kiad062

Figure 7.

Figure 7

A proposed working model of the role of SMK11 in the assembly of mitochondrial complex IV in maize. In the wild type (left), SMK11 interacts with ZmIMP1A, ZmMYB3R-3, ZmCOX23, and ZmMFDX1 to facilitate the assembly of the subunits including ZmCOX5b-3, ZmCOX6a, ZmCOX-X1, and ZmCOX-X2 into complex IV, guaranteeing the integrity and activity of complex IV. In the smk11 mutant (right), mutation of SMK11 (mSMK11) inhibits the interaction with the four assembly factors, leading to the disruption of assembly and activity of complex IV. The question marks stand for the proteins unidentified. The blot shown at the bottom is the same as that shown in Figure 4g.