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Among the translation factors that assist the ribosome in synthesizing proteins, elongation factor G (EF-G) is the only one that functions in two different phases of protein synthesis, i. e. in the translocation step of the elongation phase and in ribosome disassembly following termination. During translocation two tRNAs move by large distances from one site of the ribosome to the next, adjacent site,...
We developed a method, named GraDeR, which substantially improves the preparation of membrane protein complexes for structure determination by single-particle cryo-electron microscopy (cryo-EM). In GraDeR, glycerol gradient centrifugation is used for the mild removal of free detergent monomers and micelles from lauryl maltose-neopentyl glycol detergent stabilized membrane complexes, resulting in monodisperse...
The L7/12 stalk of the large subunit of bacterial ribosomes encompasses protein L10 and multiple copies of L7/12. We present crystal structures of Thermotoga maritima L10 in complex with three L7/12 N-terminal-domain dimers, refine the structure of an archaeal L10E N-terminal domain on the 50S subunit, and identify these elements in cryo-electron-microscopic reconstructions of Escherichia coli ribosomes...
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