5t2a

CryoEM structure of the Leishmania donovani 80S ribosome at 2.9 Angstrom resolutionCryoEM structure of the Leishmania donovani 80S ribosome at 2.9 Angstrom resolution

5t2a, resolution 2.90Å Show:Asymmetric Unit Biological Assembly Structural highlights 5t2a is a 79 chain structure with sequence from Leishmania donovani. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Related: 5t2c Experimental data: Check Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [RL37_LEIDO] Binds to the 23S rRNA. Publication Abstract from PubMed The recent success in ribosome structure determination by cryoEM has opened the door to defining structural differences between ribosomes of pathogenic organisms and humans and to understand ribosome-targeting antibiotics. Here, by direct electron-counting cryoEM, we have determined the structures of the Leishmania donovani and human ribosomes at 2.9 A and 3.6 A, respectively. Our structure of the leishmanial ribosome elucidates the organization of the six fragments of its large subunit rRNA (as opposed to a single 28S rRNA in most eukaryotes, including humans) and reveals atomic details of a unique 20 amino acid extension of the uL13 protein that pins down the ends of three of the rRNA fragments. The structure also fashions many large rRNA expansion segments. Direct comparison of our human and leishmanial ribosome structures at the decoding A-site sheds light on how the bacterial ribosome-targeting drug paromomycin selectively inhibits the eukaryotic L. donovani, but not human, ribosome. Structures and stabilization of kinetoplastid-specific split rRNAs revealed by comparing leishmanial and human ribosomes.,Zhang X, Lai M, Chang W, Yu I, Ding K, Mrazek J, Ng HL, Yang OO, Maslov DA, Zhou ZH Nat Commun. 2016 Oct 18;7:13223. doi: 10.1038/ncomms13223. PMID:27752045 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Receptor for activated protein kinase C 1 Ribosome 3D structures