In eukaryotic cells, many proteins have to be translocated across or inserted into membranes during their synthesis. The fragile nature of transport machineries involved in these processes favors structural biology approaches that capture their structures in a native membrane environment. Using Cryo electron tomography and subtomogram processing, we visualized ribosomes bound to the protein transport machineries of the endoplasmic reticulum and the inner mitochondrial membrane. For both systems, we obtained detailed insights into the native structure of transport machineries, membrane association of ribosomes, and the spatial organization of membrane-bound polyribosomes.
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In eukaryotic cells, many proteins have to be translocated across or inserted into membranes during their synthesis. The fragile nature of transport machineries involved in these processes favors structural biology approaches that capture their structures in a native membrane environment. Using Cryo electron tomography and subtomogram processing, we visualized ribosomes bound to the protein transport machineries of the endoplasmic reticulum and the inner mitochondrial membrane. For both systems,...
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