Fig. 4 | Nature Communications

Fig. 4

From: The essential genome of the crenarchaeal model Sulfolobus islandicus

Fig. 4

Thin-section TEM analysis of the wild-type and S-layer gene knockout strains. a–d Representative TEM micrographs of thin-sectioned cells of the wild-type, ΔslaA, ΔslaB, and ΔslaAB mutant strains, respectively. Images e–h are closeups of images a–d, respectively. Magenta arrows indicate the breaking points of S-layer. CM cytoplasmic membrane, SL surface layer, QPS quasi-periplasmic space, SlaA surface layer protein A. Scale bars, 500 nm (a–d) and 200 nm (e–h)

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