ジャーナル: Cell Res / 年: 2017 タイトル: Cryo-EM structures of the 80S ribosomes from human parasites Trichomonas vaginalis and Toxoplasma gondii. 著者: Zhifei Li / Qiang Guo / Lvqin Zheng / Yongsheng Ji / Yi-Ting Xie / De-Hua Lai / Zhao-Rong Lun / Xun Suo / Ning Gao / 要旨: As an indispensable molecular machine universal in all living organisms, the ribosome has been selected by evolution to be the natural target of many antibiotics and small-molecule inhibitors. High- ...As an indispensable molecular machine universal in all living organisms, the ribosome has been selected by evolution to be the natural target of many antibiotics and small-molecule inhibitors. High-resolution structures of pathogen ribosomes are crucial for understanding the general and unique aspects of translation control in disease-causing microbes. With cryo-electron microscopy technique, we have determined structures of the cytosolic ribosomes from two human parasites, Trichomonas vaginalis and Toxoplasma gondii, at resolution of 3.2-3.4 Å. Although the ribosomal proteins from both pathogens are typical members of eukaryotic families, with a co-evolution pattern between certain species-specific insertions/extensions and neighboring ribosomal RNA (rRNA) expansion segments, the sizes of their rRNAs are sharply different. Very interestingly, rRNAs of T. vaginalis are in size comparable to prokaryotic counterparts, with nearly all the eukaryote-specific rRNA expansion segments missing. These structures facilitate the dissection of evolution path for ribosomal proteins and RNAs, and may aid in design of novel translation inhibitors.
#89 - 2007年5月 アコニターゼと鉄調節タンパク質1 (Aconitase and Iron Regulatory Protein 1) 類似性 (1)
#241 - 2020年1月 20年の分子を振り返って (Twenty Years of Molecules) 類似性 (1)
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集合体
登録構造単位
1: 25S RNA 3: 5S RNA 4: 5.8S RNA A: Ribosomal protein uL2 B: Ribosomal protein uL3 C: Ribosomal protein uL4 D: Ribosomal protein uL18 E: Ribosomal protein eL6 F: Ribosomal protein uL30 G: Ribosomal protein eL8 H: Ribosomal protein uL6 I: Ribosomal protein uL16 J: Ribosomal protein uL5 K: Ribosomal protein eL13 L: Ribosomal protein eL14 M: Ribosomal protein eL15 N: Ribosomal protein uL13 O: Ribosomal protein uL22 P: Ribosomal protein eL18 Q: Ribosomal protein eL19 R: Ribosomal protein eL20 S: Ribosomal protein eL21 T: Ribosomal protein eL22 U: Ribosomal protein uL14 V: Ribosomal protein eL24 W: Ribosomal protein uL23 X: Ribosomal protein uL24 Y: Ribosomal protein eL27 Z: Ribosomal protein uL15 a: Ribosomal protein eL29 b: Ribosomal protein eL30 c: Ribosomal protein eL31 d: Ribosomal protein eL32 e: Ribosomal protein eL33 f: Ribosomal protein eL34 g: Ribosomal protein uL29 h: Ribosomal protein eL36 i: Ribosomal protein eL37 j: Ribosomal protein eL38 k: Ribosomal protein eL39 l: Ribosomal protein eL40 n: Ribosomal protein eL42 o: Ribosomal protein eL43 p: Ribosomal protein eL28
Sequences used in this study were derived from Toxoplasma gondii RH strain, which were not ...Sequences used in this study were derived from Toxoplasma gondii RH strain, which were not available at UNIPROT at the time of data processing.
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実験情報
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実験
実験
手法: 電子顕微鏡法
EM実験
試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法
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試料調製
構成要素
名称: Large subunit of Toxoplasma gondii ribosome / タイプ: RIBOSOME / Entity ID: all / 由来: NATURAL