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基本情報
登録情報 | データベース: PDB / ID: 9gtu | ||||||
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タイトル | Collagen VI alpha 1, 2, 3 heterotrimer recombinant C terminal region. Local refinement. | ||||||
![]() | (Collagen alpha- ...) x 3 | ||||||
![]() | STRUCTURAL PROTEIN / extracellular / matrix / collagen / co6A1 / co6A2 / co6A3 / von willebrand / von-willebrand / coiled-coil / ECM / double-bead / structural / microfibril / Bethlem myopathy / Ullrich congenital muscular dystrophy | ||||||
機能・相同性 | ![]() response to polyamine macromolecule / response to bleomycin / regulation of collagen fibril organization / muscle cell apoptotic process / collagen type VI trimer / multicellular organismal locomotion / muscle system process / apoptotic nuclear changes / caveola assembly / limb joint morphogenesis ...response to polyamine macromolecule / response to bleomycin / regulation of collagen fibril organization / muscle cell apoptotic process / collagen type VI trimer / multicellular organismal locomotion / muscle system process / apoptotic nuclear changes / caveola assembly / limb joint morphogenesis / reduction of food intake in response to dietary excess / mitochondrial transmembrane transport / skeletal muscle tissue growth / fat cell proliferation / extracellular matrix assembly / response to decreased oxygen levels / Collagen chain trimerization / platelet-derived growth factor binding / extracellular matrix structural constituent conferring tensile strength / response to peptide / tissue remodeling / skeletal muscle fiber differentiation / lung epithelial cell differentiation / sensory perception of mechanical stimulus / basement membrane organization / Collagen biosynthesis and modifying enzymes / collagen metabolic process / Signaling by PDGF / energy reserve metabolic process / mitochondrial depolarization / 2-oxoglutarate metabolic process / skeletal muscle tissue regeneration / myelination in peripheral nervous system / respiratory system process / NCAM1 interactions / cartilage development / collagen fibril organization / Assembly of collagen fibrils and other multimeric structures / response to pain / lung alveolus development / muscle organ development / regulation of cell size / response to muscle activity / bone mineralization / intracellular vesicle / myofibril / lung morphogenesis / endodermal cell differentiation / transmission of nerve impulse / uterus development / Collagen degradation / basement membrane / homeostasis of number of cells / hair follicle development / ECM proteoglycans / canonical Wnt signaling pathway / adipose tissue development / Integrin cell surface interactions / response to mechanical stimulus / response to glucose / single fertilization / response to UV / collagen binding / skeletal muscle fiber development / tricarboxylic acid cycle / extracellular matrix / insulin-like growth factor receptor signaling pathway / reactive oxygen species metabolic process / sarcoplasmic reticulum / response to reactive oxygen species / glycolytic process / mitochondrion organization / protein tetramerization / cellular response to amino acid stimulus / phosphatidylinositol 3-kinase/protein kinase B signal transduction / serine-type endopeptidase inhibitor activity / circadian rhythm / sarcolemma / bone development / response to toxic substance / response to wounding / autophagy / cell morphogenesis / osteoblast differentiation / insulin receptor signaling pathway / extracellular vesicle / : / heart development / neuron apoptotic process / response to lipopolysaccharide / gene expression / cell adhesion / response to xenobiotic stimulus / endoplasmic reticulum lumen / inflammatory response / lysosomal membrane / protein-containing complex / mitochondrion / extracellular space / extracellular exosome 類似検索 - 分子機能 | ||||||
生物種 | ![]() | ||||||
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: 3.14 Å | ||||||
![]() | Godwin, A. / Snee, M. / Dajani, R. / Becker, M. / Roseman, A. / Baldock, C. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Collagen VI microfibril structure reveals mechanism for molecular assembly and clustering of inherited pathogenic mutations. 著者: Alan R F Godwin / Mark H Becker / Rana Dajani / Matthew Snee / Alan M Roseman / Clair Baldock / ![]() 要旨: Collagen VI links the cell surface to the extracellular matrix to provide mechanical strength to most mammalian tissues, and is linked to human diseases including muscular dystrophy, fibrosis, ...Collagen VI links the cell surface to the extracellular matrix to provide mechanical strength to most mammalian tissues, and is linked to human diseases including muscular dystrophy, fibrosis, cardiovascular disease and osteoarthritis. Collagen VI assembles from heterotrimers of three different α-chains into microfibrils, but there are many gaps in our knowledge of the molecular assembly process. Here, we determine the structures of both heterotrimeric mini-collagen VI constructs and collagen VI microfibrils, from mammalian tissue, using cryogenic-electron microscopy. These structures reveal a cysteine-rich coiled coil region involved in trimerisation as well as microfibril assembly. Furthermore, our structures show that pathogenic mutations are located at interaction sites involved in different steps of collagen VI assembly, from the trimeric-coiled coil region that mediates heterotrimerisation, to clusters of mutations in the triple-helical region involved in microfibril formation. Our microfibril structure provides a template for understanding supramolecular assembly, and offers a platform for rationale design of therapeutics for collagen VI pathologies. | ||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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ダウンロード
PDBx/mmCIF形式 | ![]() | 291.6 KB | 表示 | ![]() |
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PDB形式 | ![]() | 225.9 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.3 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.3 MB | 表示 | |
XML形式データ | ![]() | 34.6 KB | 表示 | |
CIF形式データ | ![]() | 50.7 KB | 表示 | |
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 | ![]() 51567MC ![]() 9hanC M: このデータのモデリングに利用したマップデータ 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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集合体
登録構造単位 | ![]()
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要素
-Collagen alpha- ... , 3種, 3分子 CBA
#1: タンパク質 | 分子量: 53947.332 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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#2: タンパク質 | 分子量: 52290.398 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
#3: タンパク質 | 分子量: 51872.395 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
-糖 , 2種, 4分子 
#4: 多糖 | #5: 糖 | |
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-非ポリマー , 1種, 43分子 
#6: 水 | ChemComp-HOH / |
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-詳細
研究の焦点であるリガンドがあるか | N |
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Has protein modification | Y |
-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 |
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試料調製
構成要素 | 名称: Subcomplex of Collagen 6 alpha 2 C2 domain with Collagen 6 alpha 3 C1 and C2 domains, and the coiled coil formed from ALpha 1,2,3 タイプ: COMPLEX 詳細: C terminal regions of collagen 6 alpha 1,2,3 were expressed including some collagenous region, the coiled-coil region and the C1 and C2 von willebrand domains. Alpha 2 C2, alpha 3 C1,C2 and ...詳細: C terminal regions of collagen 6 alpha 1,2,3 were expressed including some collagenous region, the coiled-coil region and the C1 and C2 von willebrand domains. Alpha 2 C2, alpha 3 C1,C2 and the coiled coil are resolved as a globular subcomplex with the other domains observed as flexible without the constraining effect of the full microfibril. Entity ID: #1-#3 / 由来: RECOMBINANT |
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分子量 | 実験値: NO |
由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() |
緩衝液 | pH: 7.4 |
試料 | 濃度: 1 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: This sample was prepared via affinity chromatography with three tags and was monodisperse and biologically pure prior to vitrification |
試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R2/2 |
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 98 % / 凍結前の試料温度: 277.15 K |
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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: ![]() |
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): 2000 nm / 最小 デフォーカス(公称値): 750 nm / Cs: 2.7 mm / C2レンズ絞り径: 50 µm / アライメント法: COMA FREE |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 平均露光時間: 1.09 sec. / 電子線照射量: 28.11 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 撮影したグリッド数: 1 / 実像数: 35706 |
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解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 10665534 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.14 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 246984 / アルゴリズム: FOURIER SPACE / クラス平均像の数: 1 / 対称性のタイプ: POINT | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: FLEXIBLE FIT / 空間: REAL / Target criteria: RSC | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | Source name: AlphaFold / タイプ: in silico model | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
拘束条件 |
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