+
データを開く
-
基本情報
登録情報 | ![]() | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
タイトル | Cryo-EM structure of the dystrophin glycoprotein complex | |||||||||
![]() | ||||||||||
![]() |
| |||||||||
![]() | complex membrane stability signaling / STRUCTURAL PROTEIN | |||||||||
機能・相同性 | ![]() dystrobrevin complex / olfactory nerve structural organization / sarcoglycan complex / O-linked glycosylation / establishment of blood-nerve barrier / striated muscle cell development / establishment of glial blood-brain barrier / dystroglycan complex / nerve maturation / connective tissue development ...dystrobrevin complex / olfactory nerve structural organization / sarcoglycan complex / O-linked glycosylation / establishment of blood-nerve barrier / striated muscle cell development / establishment of glial blood-brain barrier / dystroglycan complex / nerve maturation / connective tissue development / retrograde trans-synaptic signaling by trans-synaptic protein complex / walking behavior / positive regulation of basement membrane assembly involved in embryonic body morphogenesis / regulation of cellular response to growth factor stimulus / Regulation of expression of SLITs and ROBOs / regulation of skeletal muscle contraction / negative regulation of peptidyl-cysteine S-nitrosylation / contractile ring / regulation of voltage-gated calcium channel activity / regulation of gastrulation / cardiac muscle cell action potential / calcium-dependent cell-matrix adhesion / reactive oxygen species biosynthetic process / morphogenesis of an epithelial sheet / glucose import in response to insulin stimulus / nucleus localization / coronary vasculature morphogenesis / dystrophin-associated glycoprotein complex / positive regulation of sodium ion transmembrane transporter activity / microtubule anchoring / vascular associated smooth muscle cell development / laminin-1 binding / response to denervation involved in regulation of muscle adaptation / postsynaptic specialization / matrix side of mitochondrial inner membrane / Formation of the dystrophin-glycoprotein complex (DGC) / neurofilament / cell-substrate junction / myotube cell development / Striated Muscle Contraction / positive regulation of myelination / basement membrane organization / photoreceptor ribbon synapse / dystroglycan binding / regulation of skeletal muscle contraction by regulation of release of sequestered calcium ion / heart process / lamin binding / cellular response to cholesterol / vinculin binding / regulation of epithelial to mesenchymal transition / myelination in peripheral nervous system / branching involved in salivary gland morphogenesis / skeletal muscle tissue regeneration / costamere / astrocyte projection / commissural neuron axon guidance / membrane organization / protein-containing complex localization / muscle cell development / neuron projection terminus / negative regulation of peptidyl-serine phosphorylation / node of Ranvier / cardiac muscle cell contraction / angiogenesis involved in wound healing / limb development / synaptic transmission, cholinergic / cardiac muscle cell development / axon regeneration / structural constituent of muscle / positive regulation of cell-matrix adhesion / muscle cell cellular homeostasis / nitric-oxide synthase binding / regulation of neurotransmitter receptor localization to postsynaptic specialization membrane / muscle organ development / response to muscle activity / epithelial tube branching involved in lung morphogenesis / regulation of synapse organization / alpha-actinin binding / : / membrane protein ectodomain proteolysis / basement membrane / positive regulation of oligodendrocyte differentiation / postsynaptic cytosol / regulation of ryanodine-sensitive calcium-release channel activity / plasma membrane raft / negative regulation of neuron differentiation / negative regulation of MAPK cascade / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / Schwann cell development / striated muscle contraction / response to glucose / heart morphogenesis / calcium ion homeostasis / skeletal muscle tissue development / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / cardiac muscle contraction / laminin binding / response to muscle stretch / positive regulation of neuron differentiation / tubulin binding 類似検索 - 分子機能 | |||||||||
生物種 | ![]() ![]() | |||||||||
手法 | 単粒子再構成法 / 解像度: 3.5 Å | |||||||||
![]() | Wu JP / Yan Z / Wan L | |||||||||
資金援助 | ![]()
| |||||||||
![]() | ![]() タイトル: Structure and assembly of the dystrophin glycoprotein complex. 著者: Li Wan / Xiaofei Ge / Qikui Xu / Gaoxingyu Huang / Tiandi Yang / Kevin P Campbell / Zhen Yan / Jianping Wu / ![]() ![]() 要旨: The dystrophin glycoprotein complex (DGC) has a crucial role in maintaining cell membrane stability and integrity by connecting the intracellular cytoskeleton with the surrounding extracellular ...The dystrophin glycoprotein complex (DGC) has a crucial role in maintaining cell membrane stability and integrity by connecting the intracellular cytoskeleton with the surrounding extracellular matrix. Dysfunction of dystrophin and its associated proteins results in muscular dystrophy, a disorder characterized by progressive muscle weakness and degeneration. Despite the important roles of the DGC in physiology and pathology, its structural details remain largely unknown, hindering a comprehensive understanding of its assembly and function. Here we isolated the native DGC from mouse skeletal muscle and obtained its high-resolution structure. Our findings unveil a markedly divergent structure from the previous model of DGC assembly. Specifically, on the extracellular side, β-, γ- and δ-sarcoglycans co-fold to form a specialized, extracellular tower-like structure, which has a central role in complex assembly by providing binding sites for α-sarcoglycan and dystroglycan. In the transmembrane region, sarcoglycans and sarcospan flank and stabilize the single transmembrane helix of dystroglycan, rather than forming a subcomplex as previously proposed. On the intracellular side, sarcoglycans and dystroglycan engage in assembly with the dystrophin-dystrobrevin subcomplex through extensive interaction with the ZZ domain of dystrophin. Collectively, these findings enhance our understanding of the structural linkage across the cell membrane and provide a foundation for the molecular interpretation of many muscular dystrophy-related mutations. | |||||||||
履歴 |
|
-
構造の表示
添付画像 |
---|
-
ダウンロードとリンク
-EMDBアーカイブ
マップデータ | ![]() | 290.6 MB | ![]() | |
---|---|---|---|---|
ヘッダ (付随情報) | ![]() ![]() | 23.5 KB 23.5 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 14.3 KB | 表示 | ![]() |
画像 | ![]() | 52.9 KB | ||
Filedesc metadata | ![]() | 7.1 KB | ||
その他 | ![]() ![]() | 285.2 MB 285.2 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 | ![]() 8yt8MC C: 同じ文献を引用 ( M: このマップから作成された原子モデル |
---|---|
類似構造データ | 類似検索 - 機能・相同性 ![]() |
-
リンク
EMDBのページ | ![]() ![]() |
---|---|
「今月の分子」の関連する項目 |
-
マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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: 1.087 Å | ||||||||||||||||||||||||||||||||||||
密度 |
| ||||||||||||||||||||||||||||||||||||
対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
|
-添付データ
-ハーフマップ: #2
ファイル | emd_39568_half_map_1.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
投影像・断面図 |
| ||||||||||||
密度ヒストグラム |
-ハーフマップ: #1
ファイル | emd_39568_half_map_2.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
投影像・断面図 |
| ||||||||||||
密度ヒストグラム |
-
試料の構成要素
+全体 : dystrophin glycoprotein complex, DGC
+超分子 #1: dystrophin glycoprotein complex, DGC
+分子 #1: Alpha-sarcoglycan
+分子 #2: Beta-sarcoglycan
+分子 #3: Dystrobrevin alpha
+分子 #4: Delta-sarcoglycan
+分子 #5: Dystrophin
+分子 #6: Gamma-sarcoglycan
+分子 #7: unknown segment
+分子 #8: Beta-dystroglycan
+分子 #9: Sarcospan
+分子 #14: 2-acetamido-2-deoxy-beta-D-glucopyranose
+分子 #15: CHOLESTEROL
+分子 #16: ZINC ION
+分子 #17: O-[(R)-{[(2R)-2,3-bis(octadecanoyloxy)propyl]oxy}(hydroxy)phospho...
+分子 #18: CALCIUM ION
-実験情報
-構造解析
![]() | 単粒子再構成法 |
---|---|
試料の集合状態 | particle |
-
試料調製
緩衝液 | pH: 7.4 / 詳細: 25 mM MOPS-Na, 150 mM NaCl, 2 mM CaCl2, 0.01% GDN |
---|
-
電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
---|---|
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: 50.0 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: FLOOD BEAM / 撮影モード: BRIGHT FIELD 最大 デフォーカス(公称値): 1.9000000000000001 µm 最小 デフォーカス(公称値): 1.4000000000000001 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
+
画像解析
-原子モデル構築 1
精密化 | プロトコル: FLEXIBLE FIT |
---|---|
得られたモデル | ![]() PDB-8yt8: |