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. 2020 Jun 10;11:2932. doi: 10.1038/s41467-020-16503-2

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© The Author(s) 2020

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Fig. 1 — a Surface representation of the mtSSU with mtIF3 (orange) and mtIF2 (blue). Empty tRNA-binding sites and mRNA channel are indicated. The binding of mtIF2 is accomplished due to mtIF3 NTD restricting the mtSSU head movement. b Relative positions of mtIF3 colored by domains (NTD purple, linker dark gray, CTD orange, CTE red) and mtIF2.