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. 2015 Jul 27;112(32):E4458–E4464. doi: 10.1073/pnas.1512232112

Fig. S1.

Fig. S1.

The septum between two vegetative cells of WT Anabaena and three fragmentation mutants. (A) Electron tomographic image of the WT septum. (B) Septum shown in A is rotated 90° around the x axis showing the channel distribution within the septum. Several channels are observed in the middle of the septum (white holes). (C) Electron tomographic image for the septum of ∆FraG. (D) Septum shown in C is rotated 90° around the x axis showing the channel distribution within the septum. Only 2 are observed compared with 15–20 in WT. Arrowheads in D indicates one of channels observed in the septum in C. (E) Electron tomographic image of the septum of the ∆FraC mutant. The septum contains fewer channels compared with WT. (F) Septum shown in E is rotated 90° around the x axis. (G) Electron tomographic image of the septum of the ∆FraD mutant. The septum contains similar number of channels compared with WT. (H) Septum shown in G is rotated 90° around the x axis. (I) Electron tomographic image of the septum of ∆FraC/D. (J) Septum shown in E is rotated 90° around the x axis showing the channel distribution. Arrowheads indicate the channels observed on their corresponding panel before rotation. “t” indicates thylakoids. All images are composed of 10 superimposed 2.2-nm serial tomographic slices. (Scale bar: 50 nm.)