5njt

Structure of the Bacillus subtilis hibernating 100S ribosome reveals the basis for 70S dimerization.

Loading... Status: waiting for Mol* initialization Structural highlights 5njt is a 10 chain structure with sequence from Bacillus subtilis subsp. subtilis str. 168. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 3.8Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function RS2_BACSU Publication Abstract from PubMed Under stress conditions, such as nutrient deprivation, bacteria enter into a hibernation stage, which is characterized by the appearance of 100S ribosomal particles. In Escherichia coli, dimerization of 70S ribosomes into 100S requires the action of the ribosome modulation factor (RMF) and the hibernation-promoting factor (HPF). Most other bacteria lack RMF and instead contain a long form HPF (LHPF), which is necessary and sufficient for 100S formation. While some structural information exists as to how RMF and HPF mediate formation of E. coli 100S (Ec100S), structural insight into 100S formation by LHPF has so far been lacking. Here we present a cryo-EM structure of the Bacillus subtilis hibernating 100S (Bs100S), revealing that the C-terminal domain (CTD) of the LHPF occupies a site on the 30S platform distinct from RMF Moreover, unlike RMF, the BsHPF-CTD is directly involved in forming the dimer interface, thereby illustrating the divergent mechanisms by which 100S formation is mediated in the majority of bacteria that contain LHPF, compared to some gamma-proteobacteria, such as E. coli. Structure of the Bacillus subtilis hibernating 100S ribosome reveals the basis for 70S dimerization.,Beckert B, Abdelshahid M, Schafer H, Steinchen W, Arenz S, Berninghausen O, Beckmann R, Bange G, Turgay K, Wilson DN EMBO J. 2017 Jul 14;36(14):2061-2072. doi: 10.15252/embj.201696189. Epub 2017 May, 3. PMID:28468753 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Ribosome 3D structures

Proteopedia Page Contributors and Editors (what is this?)

OCA