- EMDB-1413: Structural aspects of RbfA action during small ribosomal subunit ... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-1413
タイトル
Structural aspects of RbfA action during small ribosomal subunit assembly.
マップデータ
Cryo-EM map of Thermus thermophilus 30S subunit and RbfA complex.
試料
試料: Complex of ribosomal subunit 30S and RbfA
複合体: 30S small ribosomal subunit
タンパク質・ペプチド: Ribosome binding factor A
機能・相同性
機能・相同性情報
ribosomal small subunit binding / maturation of SSU-rRNA / small ribosomal subunit / cytosolic small ribosomal subunit / tRNA binding / rRNA binding / structural constituent of ribosome / translation / response to antibiotic / cytosol 類似検索 - 分子機能
Ribosome-binding factor A / Ribosome-binding factor A domain superfamily / Ribosome-binding factor A / Ribosomal protein S13, bacterial-type / Ribosomal protein S9, bacterial/plastid / Ribosomal protein S12, bacterial-type / Ribosomal protein S13, conserved site / Ribosomal protein S13 signature. / Ribosomal protein S13 / 30s ribosomal protein S13, C-terminal ...Ribosome-binding factor A / Ribosome-binding factor A domain superfamily / Ribosome-binding factor A / Ribosomal protein S13, bacterial-type / Ribosomal protein S9, bacterial/plastid / Ribosomal protein S12, bacterial-type / Ribosomal protein S13, conserved site / Ribosomal protein S13 signature. / Ribosomal protein S13 / 30s ribosomal protein S13, C-terminal / Ribosomal protein S13/S18 / Ribosomal protein S13 family profile. / K homology domain-like, alpha/beta / Ribosomal protein S13-like, H2TH / Ribosomal protein S9, conserved site / Ribosomal protein S9 signature. / Ribosomal protein S12 signature. / Ribosomal protein S9 / Ribosomal protein S9/S16 / Ribosomal protein S12/S23 / Ribosomal protein S12/S23 / Ribosomal protein S5 domain 2-type fold, subgroup / Ribosomal protein S5 domain 2-type fold / Nucleic acid-binding, OB-fold 類似検索 - ドメイン・相同性
Small ribosomal subunit protein uS12 / Small ribosomal subunit protein uS12 / Small ribosomal subunit protein uS13 / Small ribosomal subunit protein uS9 / Ribosome-binding factor A 類似検索 - 構成要素
ジャーナル: Mol Cell / 年: 2007 タイトル: Structural aspects of RbfA action during small ribosomal subunit assembly. 著者: Partha P Datta / Daniel N Wilson / Masahito Kawazoe / Neil K Swami / Tatsuya Kaminishi / Manjuli R Sharma / Timothy M Booth / Chie Takemoto / Paola Fucini / Shigeyuki Yokoyama / Rajendra K Agrawal / 要旨: Ribosome binding factor A (RbfA) is a bacterial cold shock response protein, required for an efficient processing of the 5' end of the 16S ribosomal RNA (rRNA) during assembly of the small (30S) ...Ribosome binding factor A (RbfA) is a bacterial cold shock response protein, required for an efficient processing of the 5' end of the 16S ribosomal RNA (rRNA) during assembly of the small (30S) ribosomal subunit. Here we present a crystal structure of Thermus thermophilus (Tth) RbfA and a three-dimensional cryo-electron microscopic (EM) map of the Tth 30S*RbfA complex. RbfA binds to the 30S subunit in a position overlapping the binding sites of the A and P site tRNAs, and RbfA's functionally important C terminus extends toward the 5' end of the 16S rRNA. In the presence of RbfA, a portion of the 16S rRNA encompassing helix 44, which is known to be directly involved in mRNA decoding and tRNA binding, is displaced. These results shed light on the role played by RbfA during maturation of the 30S subunit, and also indicate how RbfA provides cells with a translational advantage under conditions of cold shock.
pH: 7.8 詳細: 20mM Hepes-KOH (pH7.8), 10mM Mg(OAc)2, 200 mM NH4Cl, 65 mM KCL.
グリッド
詳細: Quantifoil 300 mesh Copper grid
凍結
凍結剤: ETHANE / チャンバー内湿度: 100 % / チャンバー内温度: 277 K / 装置: HOMEMADE PLUNGER 詳細: Vitrification instrument: Wadworth Center own cryo-plunger fabricated on-site 手法: 5ul of specimen was applied to the grid, then blotted using Whatman number 1 filter paper for 2 to 4 seconds, then plunged.
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電子顕微鏡法
顕微鏡
FEI TECNAI F20
温度
平均: 93 K
アライメント法
Legacy - 非点収差: Objective lends astigmatism corrected at 210x magnification