4v5y

Crystal structure of the bacterial ribosome from Escherichia coli in complex with paromomycin and ribosome recycling factor (RRF).

spinqualitylabelsall models 4v5y, resolution 4.45Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4v5y is a 20 chain structure with sequence from Escherichia coli. This structure supersedes the now removed PDB entries 2z4k, 2z4l, 2z4m and 2z4n. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 4.45Å Ligands: MG, PAR, ZN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function RS5_ECOLI With S4 and S12 plays an important role in translational accuracy. Many suppressors of streptomycin-dependent mutants of protein S12 are found in this protein, some but not all of which decrease translational accuracy (ram, ribosomal ambiguity mutations). Located at the back of the 30S subunit body where it stabilizes the conformation of the head with respect to the body. The physical location of this protein suggests it may also play a role in mRNA unwinding by the ribosome, possibly by forming part of a processivity clamp. Publication Abstract from PubMed Aminoglycosides are widely used antibiotics that cause messenger RNA decoding errors, block mRNA and transfer RNA translocation, and inhibit ribosome recycling. Ribosome recycling follows the termination of protein synthesis and is aided by ribosome recycling factor (RRF) in bacteria. The molecular mechanism by which aminoglycosides inhibit ribosome recycling is unknown. Here we show in X-ray crystal structures of the Escherichia coli 70S ribosome that RRF binding causes RNA helix H69 of the large ribosomal subunit, which is crucial for subunit association, to swing away from the subunit interface. Aminoglycosides bind to H69 and completely restore the contacts between ribosomal subunits that are disrupted by RRF. These results provide a structural explanation for aminoglycoside inhibition of ribosome recycling. Structural basis for aminoglycoside inhibition of bacterial ribosome recycling.,Borovinskaya MA, Pai RD, Zhang W, Schuwirth BS, Holton JM, Hirokawa G, Kaji H, Kaji A, Cate JH Nat Struct Mol Biol. 2007 Aug;14(8):727-32. Epub 2007 Jul 29. PMID:17660832 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Ribosome 3D structures Ribosome recycling factor

Proteopedia Page Contributors and Editors (what is this?)

OCA