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データを開く
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基本情報
登録情報 | ![]() | |||||||||
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タイトル | CryoEM structure of the HisRS-like domain of human GCN2 | |||||||||
![]() | main map from homogeneous refinement non sharpened | |||||||||
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![]() | GCN2 / HisRS / pseudoenzyme / translation / TRANSFERASE | |||||||||
機能・相同性 | ![]() regulation of translational initiation by eIF2 alpha phosphorylation / positive regulation of translational initiation in response to starvation / negative regulation of CREB transcription factor activity / eiF2alpha phosphorylation in response to endoplasmic reticulum stress / GCN2-mediated signaling / negative regulation of translational initiation in response to stress / negative regulation by host of viral genome replication / positive regulation of adaptive immune response / regulation of feeding behavior / T cell activation involved in immune response ...regulation of translational initiation by eIF2 alpha phosphorylation / positive regulation of translational initiation in response to starvation / negative regulation of CREB transcription factor activity / eiF2alpha phosphorylation in response to endoplasmic reticulum stress / GCN2-mediated signaling / negative regulation of translational initiation in response to stress / negative regulation by host of viral genome replication / positive regulation of adaptive immune response / regulation of feeding behavior / T cell activation involved in immune response / regulation of translational initiation / neuron projection extension / cellular response to cold / Response of EIF2AK4 (GCN2) to amino acid deficiency / negative regulation of neuron differentiation / long-term memory / negative regulation of translational initiation / positive regulation of defense response to virus by host / cytosolic ribosome / cellular response to amino acid starvation / DNA damage checkpoint signaling / learning / positive regulation of long-term synaptic potentiation / cellular response to UV / protein autophosphorylation / defense response to virus / viral translation / adaptive immune response / eukaryotic translation initiation factor 2alpha kinase activity / tRNA binding / 3-phosphoinositide-dependent protein kinase activity / DNA-dependent protein kinase activity / ribosomal protein S6 kinase activity / histone H3S10 kinase activity / histone H2AXS139 kinase activity / histone H3S28 kinase activity / histone H4S1 kinase activity / histone H2BS14 kinase activity / histone H3T3 kinase activity / histone H2AS121 kinase activity / Rho-dependent protein serine/threonine kinase activity / histone H2BS36 kinase activity / histone H3S57 kinase activity / histone H2AT120 kinase activity / AMP-activated protein kinase activity / histone H2AS1 kinase activity / histone H3T6 kinase activity / histone H3T11 kinase activity / histone H3T45 kinase activity / non-specific serine/threonine protein kinase / protein phosphorylation / protein serine kinase activity / protein serine/threonine kinase activity / ATP binding / nucleus / cytosol / cytoplasm 類似検索 - 分子機能 | |||||||||
生物種 | ![]() | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.2 Å | |||||||||
![]() | Yin JZ / Keszei AFA / Mazhab-Jafari MT / Sicheri F | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: The HisRS-like domain of GCN2 is a pseudoenzyme that can bind uncharged tRNA. 著者: Jay Z Yin / Alexander F A Keszei / Scott Houliston / Frantisek Filandr / Jonah Beenstock / Salima Daou / Julia Kitaygorodsky / David C Schriemer / Mohammad T Mazhab-Jafari / Anne-Claude Gingras / Frank Sicheri / ![]() 要旨: GCN2 is a stress response kinase that phosphorylates the translation initiation factor eIF2α to inhibit general protein synthesis when activated by uncharged tRNA and stalled ribosomes. The presence ...GCN2 is a stress response kinase that phosphorylates the translation initiation factor eIF2α to inhibit general protein synthesis when activated by uncharged tRNA and stalled ribosomes. The presence of a HisRS-like domain in GCN2, normally associated with tRNA aminoacylation, led to the hypothesis that eIF2α kinase activity is regulated by the direct binding of this domain to uncharged tRNA. Here we solved the structure of the HisRS-like domain in the context of full-length GCN2 by cryoEM. Structure and function analysis shows the HisRS-like domain of GCN2 has lost histidine and ATP binding but retains tRNA binding abilities. Hydrogen deuterium exchange mass spectrometry, site-directed mutagenesis and computational docking experiments support a tRNA binding model that is partially shifted from that employed by bona fide HisRS enzymes. These results demonstrate that the HisRS-like domain of GCN2 is a pseudoenzyme and advance our understanding of GCN2 regulation and function. | |||||||||
履歴 |
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構造の表示
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ダウンロードとリンク
-EMDBアーカイブ
マップデータ | ![]() | 15.4 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 18.7 KB 18.7 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() ![]() | 5.3 KB 6.5 KB | 表示 表示 | ![]() |
画像 | ![]() | 48.3 KB | ||
マスクデータ | ![]() ![]() | 30.5 MB 30.5 MB | ![]() | |
Filedesc metadata | ![]() | 6.6 KB | ||
その他 | ![]() ![]() ![]() | 8 MB 28.2 MB 28.2 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 8t7tMC M: このマップから作成された原子モデル C: 同じ文献を引用 ( |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||
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注釈 | main map from homogeneous refinement non sharpened | ||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.35 Å | ||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-マスク #1
ファイル | ![]() | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-マスク #2
ファイル | ![]() | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-追加マップ: additional map from non uniform refinement non sharpened
ファイル | emd_41094_additional_1.map | ||||||||||||
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注釈 | additional map from non uniform refinement non sharpened | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: half map A of main map from homogeneous refinement
ファイル | emd_41094_half_map_1.map | ||||||||||||
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注釈 | half map A of main map from homogeneous refinement | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: half map B of main map from homogeneous refinement
ファイル | emd_41094_half_map_2.map | ||||||||||||
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注釈 | half map B of main map from homogeneous refinement | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
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試料の構成要素
-全体 : dimeric HisRS-like domain of human GCN2
全体 | 名称: dimeric HisRS-like domain of human GCN2 |
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要素 |
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-超分子 #1: dimeric HisRS-like domain of human GCN2
超分子 | 名称: dimeric HisRS-like domain of human GCN2 / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all |
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由来(天然) | 生物種: ![]() |
-分子 #1: eIF-2-alpha kinase GCN2
分子 | 名称: eIF-2-alpha kinase GCN2 / タイプ: protein_or_peptide / ID: 1 / コピー数: 2 / 光学異性体: LEVO / EC番号: non-specific serine/threonine protein kinase |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 187.216578 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: GMAGGRGAPG RGRDEPPESY PQRQDHELQA LEAIYGADFQ DLRPDACGPV KEPPEINLVL YPQGLTGEEV YVKVDLRVKC PPTYPDVVP EIELKNAKGL SNESVNLLKS RLEELAKKHC GEVMIFELAY HVQSFLSEHN KPPPKSFHEE MLERRAQEEQ Q RLLEAKRK ...文字列: GMAGGRGAPG RGRDEPPESY PQRQDHELQA LEAIYGADFQ DLRPDACGPV KEPPEINLVL YPQGLTGEEV YVKVDLRVKC PPTYPDVVP EIELKNAKGL SNESVNLLKS RLEELAKKHC GEVMIFELAY HVQSFLSEHN KPPPKSFHEE MLERRAQEEQ Q RLLEAKRK EEQEQREILH EIQRRKEEIK EEKKRKEMAK QERLEIASLS NQDHTSKKDP GGHRTAAILH GGSPDFVGNG KH RANSSGR SRRERQYSVC NSEDSPGSCE ILYFNMGSPD QLMVHKGKCI GSDEQLGKLV YNALETATGG FVLLYEWVLQ WQK KMGPFL TSQEKEKIDK CKKQIQGTET EFNSLVKLSH PNVVRYLAMN LKEQDDSIVV DILVEHISGV SLAAHLSHSG PIPV HQLRR YTAQLLSGLD YLHSNSVVHK VLSASNVLVD AEGTVKITDY SISKRLADIC KEDVFEQTRV RFSDNALPYK TGKKG DVWR LGLLLLSLSQ GQECGEYPVT IPSDLPADFQ DFLKKCVCLD DKERWSPQQL LKHSFINPQP KMPLVEQSPE DSEGQD YVE TVIPSNRLPS AAFFSETQRQ FSRYFIEFEE LQLLGKGAFG AVIKVQNKLD GCCYAVKRIP INPASRQFRR IKGEVTL LS RLHHENIVRY YNAWIERHER PAGPGTPPPD SGPLAKDDRA ARGQPASDTD GLDSVEAAAP PPILSSSVEW STSGERSA S ARFPATGPGS SDDEDDDEDE HGGVFSQSFL PASDSESDII FDNEDENSKS QNQDEDCNEK NGCHESEPSV TTEAVHYLY IQMEYCEKST LRDTIDQGLY RDTVRLWRLF REILDGLAYI HEKGMIHRDL KPVNIFLDSD DHVKIGDFGL ATDHLAFSAD SKQDDQTGD LIKSDPSGHL TGMVGTALYV SPEVQGSTKS AYNQKVDLFS LGIIFFEMSY HPMVTASERI FVLNQLRDPT S PKFPEDFD DGEHAKQKSV ISWLLNHDPA KRPTATELLK SELLPPPQME ESELHEVLHH TLTNVDGKAY RTMMAQIFSQ RI SPAIDYT YDSDILKGNF SIRTAKMQQH VCETIIRIFK RHGAVQLCTP LLLPRNRQIY EHNEAALFMD HSGMLVMLPF DLR IPFARY VARNNILNLK RYCIERVFRP RKLDRFHPKE LLECAFDIVT STTNSFLPTA EIIYTIYEII QEFPALQERN YSIY LNHTM LLKAILLHCG IPEDKLSQVY IILYDAVTEK LTRREVEAKF CNLSLSSNSL CRLYKFIEQK GDLQDLMPTI NSLIK QKTG IAQLVKYGLK DLEEVVGLLK KLGIKLQVLI NLGLVYKVQQ HNGIIFQFVA FIKRRQRAVP EILAAGGRYD LLIPQF RGP QALGPVPTAI GVSIAIDKIS AAVLNMEESV TISSCDLLVV SVGQMSMSRA INLTQKLWTA GITAEIMYDW SQSQEEL QE YCRHHEITYV ALVSDKEGSH VKVKSFEKER QTEKRVLETE LVDHVLQKLR TKVTDERNGR EASDNLAVQN LKGSFSNA S GLFEIHGATV VPIVSVLAPE KLSASTRRRY ETQVQTRLQT SLANLHQKSS EIEILAVDLP KETILQFLSL EWDADEQAF NTTVKQLLSR LPKQRYLKLV CDEIYNIKVE KKVSVLFLYS YRDDYYRILF UniProtKB: eIF-2-alpha kinase GCN2 |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
緩衝液 | pH: 8 |
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凍結 | 凍結剤: ETHANE / 装置: FEI VITROBOT MARK IV |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 平均電子線量: 80.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: OTHER / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2.5 µm / 最小 デフォーカス(公称値): 1.0 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
-原子モデル構築 1
初期モデル | Chain - Source name: AlphaFold / Chain - Initial model type: in silico model |
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精密化 | 空間: REAL / プロトコル: OTHER |
得られたモデル | ![]() PDB-8t7t: |