+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 6k72 | |||||||||
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タイトル | eIF2(aP) - eIF2B complex | |||||||||
要素 |
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キーワード | TRANSLATION (翻訳 (生物学)) / Translation Initiation | |||||||||
機能・相同性 | 機能・相同性情報 male germ cell proliferation / regulation of translation in response to endoplasmic reticulum stress / translation initiation ternary complex / glial limiting end-foot / response to kainic acid / response to manganese-induced endoplasmic reticulum stress / positive regulation of type B pancreatic cell apoptotic process / methionyl-initiator methionine tRNA binding / eukaryotic translation initiation factor 2B complex / Response of EIF2AK1 (HRI) to heme deficiency ...male germ cell proliferation / regulation of translation in response to endoplasmic reticulum stress / translation initiation ternary complex / glial limiting end-foot / response to kainic acid / response to manganese-induced endoplasmic reticulum stress / positive regulation of type B pancreatic cell apoptotic process / methionyl-initiator methionine tRNA binding / eukaryotic translation initiation factor 2B complex / Response of EIF2AK1 (HRI) to heme deficiency / negative regulation of translational initiation in response to stress / Recycling of eIF2:GDP / PERK-mediated unfolded protein response / eukaryotic translation initiation factor 2 complex / PERK regulates gene expression / regulation of translational initiation in response to stress / cytoplasmic translational initiation / translation factor activity, RNA binding / protein-synthesizing GTPase / oligodendrocyte development / formation of cytoplasmic translation initiation complex / guanyl-nucleotide exchange factor complex / formation of translation preinitiation complex / astrocyte development / eukaryotic 48S preinitiation complex / : / astrocyte differentiation / Formation of the ternary complex, and subsequently, the 43S complex / regulation of translational initiation / Ribosomal scanning and start codon recognition / Translation initiation complex formation / positive regulation of translational initiation / Response of EIF2AK4 (GCN2) to amino acid deficiency / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression / response to glucose / stress granule assembly / translation initiation factor binding / ovarian follicle development / translational initiation / cellular response to amino acid starvation / 髄鞘 / translation initiation factor activity / response to endoplasmic reticulum stress / guanyl-nucleotide exchange factor activity / central nervous system development / hippocampus development / PKR-mediated signaling / ABC-family proteins mediated transport / response to peptide hormone / cytoplasmic stress granule / male gonad development / cellular response to UV / ribosome binding / regulation of translation / cellular response to heat / cellular response to oxidative stress / response to heat / T cell receptor signaling pathway / in utero embryonic development / cadherin binding / positive regulation of apoptotic process / mRNA binding / GTPase activity / シナプス / GTP binding / RNA binding / extracellular exosome / ATP binding / 生体膜 / identical protein binding / metal ion binding / 細胞核 / 細胞膜 / 細胞質基質 / 細胞質 類似検索 - 分子機能 | |||||||||
生物種 | Homo sapiens (ヒト) | |||||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 4.6 Å | |||||||||
データ登録者 | Kashiwagi, K. / Yokoyama, T. / Ito, T. | |||||||||
資金援助 | 日本, 2件
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引用 | ジャーナル: Science / 年: 2019 タイトル: Structural basis for eIF2B inhibition in integrated stress response. 著者: Kazuhiro Kashiwagi / Takeshi Yokoyama / Madoka Nishimoto / Mari Takahashi / Ayako Sakamoto / Mayumi Yonemochi / Mikako Shirouzu / Takuhiro Ito / 要旨: A core event in the integrated stress response, an adaptive pathway common to all eukaryotic cells in response to various stress stimuli, is the phosphorylation of eukaryotic translation initiation ...A core event in the integrated stress response, an adaptive pathway common to all eukaryotic cells in response to various stress stimuli, is the phosphorylation of eukaryotic translation initiation factor 2 (eIF2). Normally, unphosphorylated eIF2 transfers the methionylated initiator tRNA to the ribosome in a guanosine 5'-triphosphate-dependent manner. By contrast, phosphorylated eIF2 inhibits its specific guanine nucleotide exchange factor, eIF2B. To elucidate how the eIF2 phosphorylation status regulates the eIF2B activity, we determined cryo-electron microscopic and crystallographic structures of eIF2B in complex with unphosphorylated or phosphorylated eIF2. The unphosphorylated and phosphorylated forms of eIF2 bind to eIF2B in completely different manners: the nucleotide exchange-active and -inactive modes, respectively. These structures explain how phosphorylated eIF2 dominantly inhibits the nucleotide exchange activity of eIF2B. | |||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 6k72.cif.gz | 743.4 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb6k72.ent.gz | 597 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 6k72.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/k7/6k72 ftp://data.pdbj.org/pub/pdb/validation_reports/k7/6k72 | HTTPS FTP |
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-関連構造データ
-リンク
-集合体
登録構造単位 |
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-要素
-Translation initiation factor eIF-2B subunit ... , 5種, 10分子 ABCDEFGHIJ
#1: タンパク質 | 分子量: 33754.148 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: EIF2B1, EIF2BA / 発現宿主: Escherichia coli (大腸菌) / 参照: UniProt: Q14232 #2: タンパク質 | 分子量: 39039.547 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: EIF2B2, EIF2BB / 発現宿主: Escherichia coli (大腸菌) / 参照: UniProt: P49770 #3: タンパク質 | 分子量: 50304.230 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: EIF2B3 / 発現宿主: Escherichia coli (大腸菌) / 参照: UniProt: Q9NR50 #4: タンパク質 | 分子量: 57640.168 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: EIF2B4, EIF2BD / 発現宿主: Escherichia coli (大腸菌) / 参照: UniProt: Q9UI10 #5: タンパク質 | 分子量: 80466.609 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: EIF2B5, EIF2BE / 発現宿主: Escherichia coli (大腸菌) / 参照: UniProt: Q13144 |
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-Eukaryotic translation initiation factor 2 subunit ... , 3種, 4分子 KLMP
#6: タンパク質 | 分子量: 36161.180 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: EIF2S1, EIF2A / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P05198 #7: タンパク質 | | 分子量: 38454.484 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: EIF2S2, EIF2B / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P20042 #8: タンパク質 | | 分子量: 51178.406 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: EIF2S3, EIF2G / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P41091 |
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-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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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 |
-試料調製
構成要素 | 名称: eIF2(aP) - eIF2B / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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由来(天然) | 生物種: HOMO SAPIENS (ヒト) |
由来(組換発現) | 生物種: ESCHERICHIA COLI (大腸菌) |
緩衝液 | pH: 7.5 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE |
-電子顕微鏡撮影
実験機器 | モデル: Talos Arctica / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TECNAI ARCTICA |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 200 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELDBright-field microscopy |
撮影 | 電子線照射量: 50 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
-解析
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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対称性 | 点対称性: C1 (非対称) |
3次元再構成 | 解像度: 4.6 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 719877 / 対称性のタイプ: POINT |