- EMDB-1363: Locking and unlocking of ribosomal motions. -
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基本情報
登録情報
データベース: EMDB / ID: EMD-1363
タイトル
Locking and unlocking of ribosomal motions.
マップデータ
Cryo-EM map of E.coli 70S ribosome
試料
試料: EF-G bound Release Complex in the presence of Puromycin and GDPNP
複合体: Release Complex
リガンド: Puromycin
リガンド: EF-G
リガンド: GDPNP
機能・相同性
機能・相同性情報
translational elongation / translation elongation factor activity / GDP binding / ribosome binding / small ribosomal subunit / large ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / tRNA binding / rRNA binding / ribosome ...translational elongation / translation elongation factor activity / GDP binding / ribosome binding / small ribosomal subunit / large ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / tRNA binding / rRNA binding / ribosome / structural constituent of ribosome / translation / GTPase activity / GTP binding / magnesium ion binding / metal ion binding / cytoplasm 類似検索 - 分子機能
Translation elongation factor EFG/EF2 / : / Elongation factor G, domain III / EFG, domain V / Elongation Factor G, domain II / Elongation Factor G, domain III / Translation elongation factor EFG/EF2, domain IV / Elongation factor G, domain IV / Elongation factor G, domain IV / Elongation factor G C-terminus ...Translation elongation factor EFG/EF2 / : / Elongation factor G, domain III / EFG, domain V / Elongation Factor G, domain II / Elongation Factor G, domain III / Translation elongation factor EFG/EF2, domain IV / Elongation factor G, domain IV / Elongation factor G, domain IV / Elongation factor G C-terminus / Elongation factor EFG, domain V-like / Elongation factor G C-terminus / EF-G domain III/V-like / Tr-type G domain, conserved site / Translational (tr)-type guanine nucleotide-binding (G) domain signature. / Translation elongation factor EFTu-like, domain 2 / Elongation factor Tu domain 2 / Ribosomal protein L11, bacterial-type / Ribosomal protein L31 type A / Ribosomal protein L31 signature. / Translational (tr)-type GTP-binding domain / Elongation factor Tu GTP binding domain / Translational (tr)-type guanine nucleotide-binding (G) domain profile. / Ribosomal protein L31 / Ribosomal protein L31 superfamily / Ribosomal protein L31 / Ribosomal protein L11, conserved site / Ribosomal protein L11 signature. / Ribosomal protein L11, N-terminal / Ribosomal protein L11, N-terminal domain / Ribosomal protein L11/L12 / Ribosomal protein L11, C-terminal / Ribosomal protein L11, C-terminal domain superfamily / Ribosomal protein L11/L12, N-terminal domain superfamily / Ribosomal protein L11, RNA binding domain / Ribosomal protein L11/L12 / Ribosomal protein L5, bacterial-type / Ribosomal protein S13, bacterial-type / L28p-like / Ribosomal protein S12, bacterial-type / Ribosomal protein L5, conserved site / Ribosomal protein L5 signature. / Ribosomal protein L5, N-terminal / Ribosomal protein L5 / Ribosomal protein L5, C-terminal / ribosomal L5P family C-terminus / Ribosomal protein L5 / Ribosomal protein L5 domain superfamily / 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. / Ribosomal protein S13-like, H2TH / Small GTP-binding protein domain / Ribosomal protein S12 signature. / Ribosomal protein S12/S23 / Ribosomal protein S12/S23 / Translation protein, beta-barrel domain superfamily / Ribosomal protein S5 domain 2-type fold, subgroup / Ribosomal protein S5 domain 2-type fold / Nucleic acid-binding, OB-fold / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
30S ribosomal protein S13 / 50S ribosomal protein L5 / 50S ribosomal protein L31 / Elongation factor G / Large ribosomal subunit protein uL11 / Small ribosomal subunit protein uS12 類似検索 - 構成要素
ジャーナル: Cell / 年: 2003 タイトル: Locking and unlocking of ribosomal motions. 著者: Mikel Valle / Andrey Zavialov / Jayati Sengupta / Urmila Rawat / Måns Ehrenberg / Joachim Frank / 要旨: During the ribosomal translocation, the binding of elongation factor G (EF-G) to the pretranslocational ribosome leads to a ratchet-like rotation of the 30S subunit relative to the 50S subunit in the ...During the ribosomal translocation, the binding of elongation factor G (EF-G) to the pretranslocational ribosome leads to a ratchet-like rotation of the 30S subunit relative to the 50S subunit in the direction of the mRNA movement. By means of cryo-electron microscopy we observe that this rotation is accompanied by a 20 A movement of the L1 stalk of the 50S subunit, implying that this region is involved in the translocation of deacylated tRNAs from the P to the E site. These ribosomal motions can occur only when the P-site tRNA is deacylated. Prior to peptidyl-transfer to the A-site tRNA or peptide removal, the presence of the charged P-site tRNA locks the ribosome and prohibits both of these motions.