- EMDB-3245: Density map of the Sec61 channel opened by a signal sequence -
+
データを開く
IDまたはキーワード:
読み込み中...
-
基本情報
登録情報
データベース: EMDB / ID: EMD-3245
タイトル
Density map of the Sec61 channel opened by a signal sequence
マップデータ
This is the final postprocessed, sharpened, and masked map.
試料
試料: The stalled mammalian Sec61 complex opened by the pre-prolactin signal sequence.
複合体: mammalian ribosome
タンパク質・ペプチド: Sec61 channel
キーワード
ribosome / Sec61 / translocation / signal sequence
機能・相同性
機能・相同性情報
long-day photoperiodism / response to external biotic stimulus / prolactin receptor binding / peptide hormone secretion / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / membrane docking / positive regulation of lactation / pronephric nephron development / regulation of meiotic cell cycle process involved in oocyte maturation / response to L-arginine ...long-day photoperiodism / response to external biotic stimulus / prolactin receptor binding / peptide hormone secretion / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / membrane docking / positive regulation of lactation / pronephric nephron development / regulation of meiotic cell cycle process involved in oocyte maturation / response to L-arginine / cotranslational protein targeting to membrane / Ssh1 translocon complex / Sec61 translocon complex / protein targeting to ER / protein insertion into ER membrane / SRP-dependent cotranslational protein targeting to membrane, translocation / positive regulation of fatty acid biosynthetic process / mammary gland development / signal sequence binding / blastocyst formation / post-translational protein targeting to membrane, translocation / response to food / biosynthetic process / positive regulation of endocytosis / protein transmembrane transporter activity / response to mechanical stimulus / positive regulation of phagocytosis / lactation / female pregnancy / positive regulation of receptor signaling pathway via JAK-STAT / response to nutrient levels / positive regulation of non-canonical NF-kappaB signal transduction / hormone activity / phospholipid binding / positive regulation of nitric oxide biosynthetic process / ribosome binding / positive regulation of canonical NF-kappaB signal transduction / cell surface receptor signaling pathway / inflammatory response / endoplasmic reticulum lumen / negative regulation of gene expression / positive regulation of gene expression / endoplasmic reticulum membrane / negative regulation of apoptotic process / extracellular space / extracellular region / metal ion binding / cytosol 類似検索 - 分子機能
Somatotropin/prolactin / Somatotropin hormone, conserved site / Somatotropin hormone family / Somatotropin, prolactin and related hormones signature 1. / Somatotropin, prolactin and related hormones signature 2. / Protein translocase SEC61 complex, gamma subunit / Protein translocase SecE domain superfamily / Translocon Sec61/SecY, plug domain / Plug domain of Sec61p / Protein secE/sec61-gamma signature. ...Somatotropin/prolactin / Somatotropin hormone, conserved site / Somatotropin hormone family / Somatotropin, prolactin and related hormones signature 1. / Somatotropin, prolactin and related hormones signature 2. / Protein translocase SEC61 complex, gamma subunit / Protein translocase SecE domain superfamily / Translocon Sec61/SecY, plug domain / Plug domain of Sec61p / Protein secE/sec61-gamma signature. / Protein secY signature 1. / Protein secY signature 2. / SecE/Sec61-gamma subunits of protein translocation complex / Protein translocase complex, SecE/Sec61-gamma subunit / SecY/SEC61-alpha family / SecY domain superfamily / SecY conserved site / SecY / Four-helical cytokine-like, core 類似検索 - ドメイン・相同性
Prolactin / Protein transport protein Sec61 subunit alpha isoform 1 / Protein transport protein Sec61 subunit gamma / Prolactin 類似検索 - 構成要素
ジャーナル: Science / 年: 2016 タイトル: Structure of the Sec61 channel opened by a signal sequence. 著者: Rebecca M Voorhees / Ramanujan S Hegde / 要旨: Secreted and integral membrane proteins compose up to one-third of the biological proteome. These proteins contain hydrophobic signals that direct their translocation across or insertion into the ...Secreted and integral membrane proteins compose up to one-third of the biological proteome. These proteins contain hydrophobic signals that direct their translocation across or insertion into the lipid bilayer by the Sec61 protein-conducting channel. The molecular basis of how hydrophobic signals within a nascent polypeptide trigger channel opening is not understood. Here, we used cryo-electron microscopy to determine the structure of an active Sec61 channel that has been opened by a signal sequence. The signal supplants helix 2 of Sec61α, which triggers a rotation that opens the central pore both axially across the membrane and laterally toward the lipid bilayer. Comparisons with structures of Sec61 in other states suggest a pathway for how hydrophobic signals engage the channel to gain access to the lipid bilayer.
全体 : The stalled mammalian Sec61 complex opened by the pre-prolactin s...
全体
名称: The stalled mammalian Sec61 complex opened by the pre-prolactin signal sequence.
要素
試料: The stalled mammalian Sec61 complex opened by the pre-prolactin signal sequence.
複合体: mammalian ribosome
タンパク質・ペプチド: Sec61 channel
-
超分子 #1000: The stalled mammalian Sec61 complex opened by the pre-prolactin s...
超分子
名称: The stalled mammalian Sec61 complex opened by the pre-prolactin signal sequence. タイプ: sample / ID: 1000 / 詳細: The sample was monodisperse / 集合状態: monomer / Number unique components: 2
-
超分子 #1: mammalian ribosome
超分子
名称: mammalian ribosome / タイプ: complex / ID: 1 / Name.synonym: 80S ribosome / 組換発現: No / Ribosome-details: ribosome-eukaryote: ALL
pH: 7.5 詳細: 50 mM HEPES pH 7.5, 200 mM KOAc, 15 mM MgOAc2, 1 mM DTT, 0.25% digitonin
グリッド
詳細: 400 mesh holey carbon grid coated with a continuous layer of amorphous carbon
凍結
凍結剤: ETHANE / チャンバー内湿度: 100 % / 装置: FEI VITROBOT MARK II 手法: Incubate for 30 seconds at 4 C and blot for 9 seconds before plunging
-
電子顕微鏡法
顕微鏡
FEI TITAN KRIOS
アライメント法
Legacy - 非点収差: Objective astigmatism was corrected at 60,000 times magnification
日付
2015年3月9日
撮影
カテゴリ: CCD フィルム・検出器のモデル: FEI FALCON II (4k x 4k) 実像数: 1489 / 平均電子線量: 27 e/Å2 詳細: Every image is the average of 17 frames recorded by the direct electron detector.