+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7ntf | ||||||
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タイトル | Cryo-EM structure of unliganded O-GlcNAc transferase | ||||||
要素 | Isoform 1 of UDP-N-acetylglucosamine--peptide N-acetylglucosaminyltransferase 110 kDa subunit | ||||||
キーワード | TRANSFERASE / O-GlcNAc transferase O-linked B-n-acetylglucosamine transferase | ||||||
機能・相同性 | 機能・相同性情報 negative regulation of non-canonical inflammasome complex assembly / protein N-acetylglucosaminyltransferase complex / regulation of insulin receptor signaling pathway / protein O-acetylglucosaminyltransferase activity / protein O-GlcNAc transferase / positive regulation of transcription from RNA polymerase II promoter by glucose / acetylglucosaminyltransferase activity / regulation of Rac protein signal transduction / regulation of necroptotic process / negative regulation of stem cell population maintenance ...negative regulation of non-canonical inflammasome complex assembly / protein N-acetylglucosaminyltransferase complex / regulation of insulin receptor signaling pathway / protein O-acetylglucosaminyltransferase activity / protein O-GlcNAc transferase / positive regulation of transcription from RNA polymerase II promoter by glucose / acetylglucosaminyltransferase activity / regulation of Rac protein signal transduction / regulation of necroptotic process / negative regulation of stem cell population maintenance / protein O-linked glycosylation / NSL complex / regulation of glycolytic process / regulation of neurotransmitter receptor localization to postsynaptic specialization membrane / RIPK1-mediated regulated necrosis / regulation of synapse assembly / regulation of gluconeogenesis / positive regulation of stem cell population maintenance / Formation of WDR5-containing histone-modifying complexes / Sin3-type complex / positive regulation of proteolysis / phosphatidylinositol-3,4,5-trisphosphate binding / hemopoiesis / histone acetyltransferase complex / mitophagy / positive regulation of lipid biosynthetic process / negative regulation of proteasomal ubiquitin-dependent protein catabolic process / negative regulation of protein ubiquitination / positive regulation of TORC1 signaling / response to nutrient / negative regulation of cell migration / cell projection / positive regulation of translation / cellular response to glucose stimulus / mitochondrial membrane / negative regulation of transforming growth factor beta receptor signaling pathway / circadian regulation of gene expression / response to insulin / Regulation of necroptotic cell death / chromatin DNA binding / protein processing / UCH proteinases / positive regulation of cold-induced thermogenesis / chromatin organization / HATs acetylate histones / glutamatergic synapse / regulation of transcription by RNA polymerase II / apoptotic process / positive regulation of DNA-templated transcription / negative regulation of transcription by RNA polymerase II / signal transduction / positive regulation of transcription by RNA polymerase II / protein-containing complex / nucleoplasm / nucleus / plasma membrane / cytosol 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: 5.32 Å | ||||||
データ登録者 | Meek, R.W. / Blaza, J.N. / Davies, G.J. | ||||||
資金援助 | 英国, 1件
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引用 | ジャーナル: Nat Commun / 年: 2021 タイトル: Cryo-EM structure provides insights into the dimer arrangement of the O-linked β-N-acetylglucosamine transferase OGT. 著者: Richard W Meek / James N Blaza / Jil A Busmann / Matthew G Alteen / David J Vocadlo / Gideon J Davies / 要旨: The O-linked β-N-acetylglucosamine modification is a core signalling mechanism, with erroneous patterns leading to cancer and neurodegeneration. Although thousands of proteins are subject to this ...The O-linked β-N-acetylglucosamine modification is a core signalling mechanism, with erroneous patterns leading to cancer and neurodegeneration. Although thousands of proteins are subject to this modification, only a single essential glycosyltransferase catalyses its installation, the O-GlcNAc transferase, OGT. Previous studies have provided truncated structures of OGT through X-ray crystallography, but the full-length protein has never been observed. Here, we report a 5.3 Å cryo-EM model of OGT. We show OGT is a dimer, providing a structural basis for how some X-linked intellectual disability mutations at the interface may contribute to disease. We observe that the catalytic section of OGT abuts a 13.5 tetratricopeptide repeat unit region and find the relative positioning of these sections deviate from the previously proposed, X-ray crystallography-based model. We also note that OGT exhibits considerable heterogeneity in tetratricopeptide repeat units N-terminal to the dimer interface with repercussions for how OGT binds protein ligands and partners. | ||||||
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 | 7ntf.cif.gz | 307 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7ntf.ent.gz | 210.2 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7ntf.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
文書・要旨 | 7ntf_validation.pdf.gz | 840.6 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7ntf_full_validation.pdf.gz | 843 KB | 表示 | |
XML形式データ | 7ntf_validation.xml.gz | 41.2 KB | 表示 | |
CIF形式データ | 7ntf_validation.cif.gz | 67.6 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/nt/7ntf ftp://data.pdbj.org/pub/pdb/validation_reports/nt/7ntf | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
#1: タンパク質 | 分子量: 120225.773 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: OGT 発現宿主: Escherichia coli 'BL21-Gold(DE3)pLysS AG' (大腸菌) 参照: UniProt: O15294, protein O-GlcNAc transferase |
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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: Dimeric assembly of O-GlcNAc transferase / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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分子量 | 値: 0.12 MDa / 実験値: YES |
由来(天然) | 生物種: Homo sapiens (ヒト) |
由来(組換発現) | 生物種: Escherichia coli 'BL21-Gold(DE3)pLysS AG' (大腸菌) |
緩衝液 | pH: 7.5 詳細: 25 mM HEPES pH 7.5 150 mM NaCl 1 mM DTT 0.5 % glycerol |
試料 | 濃度: 1 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: UltrAuFoil |
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277.15 K / 詳細: Blot for 4 seconds before plunging |
-電子顕微鏡撮影
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 130000 X / 最大 デフォーカス(公称値): 3200 nm / 最小 デフォーカス(公称値): 1800 nm / Cs: 2.7 mm / C2レンズ絞り径: 100 µm |
撮影 | 平均露光時間: 1.5 sec. / 電子線照射量: 52 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
-解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | |||||||||||||||||||||
3次元再構成 | 解像度: 5.32 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 74102 / 対称性のタイプ: POINT | |||||||||||||||||||||
原子モデル構築 | プロトコル: RIGID BODY FIT | |||||||||||||||||||||
原子モデル構築 |
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