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データを開く
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基本情報
| 登録情報 | データベース: PDB / ID: 9n4k | ||||||
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| タイトル | CryoEM structure of ALK2-ActRIIB bound to BMP6 | ||||||
要素 |
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キーワード | SIGNALING PROTEIN / TGFB / Signaling / Receptor / Bone Morphogenetic Protein / ALK2 / Ligand / Growth Factor | ||||||
| 機能・相同性 | 機能・相同性情報positive regulation of aldosterone biosynthetic process / positive regulation of aldosterone secretion / Regulation of signaling by NODAL / activin receptor activity / activin receptor activity, type II / lymphatic endothelial cell differentiation / positive regulation of activin receptor signaling pathway / enzyme activator complex / venous blood vessel development / negative regulation of adherens junction organization ...positive regulation of aldosterone biosynthetic process / positive regulation of aldosterone secretion / Regulation of signaling by NODAL / activin receptor activity / activin receptor activity, type II / lymphatic endothelial cell differentiation / positive regulation of activin receptor signaling pathway / enzyme activator complex / venous blood vessel development / negative regulation of adherens junction organization / endocardial cushion cell fate commitment / positive regulation of chondrocyte differentiation / lymphangiogenesis / trophoblast cell migration / mitral valve morphogenesis / BMP receptor complex / cardiac muscle cell fate commitment / BMP receptor activity / endocardial cushion fusion / atrial septum primum morphogenesis / retina vasculature development in camera-type eye / positive regulation of endothelial cell differentiation / positive regulation of cardiac epithelial to mesenchymal transition / acute inflammatory response / type B pancreatic cell development / positive regulation of determination of dorsal identity / transforming growth factor beta receptor activity, type I / embryonic foregut morphogenesis / BMP receptor binding / smooth muscle cell differentiation / activin receptor complex / activin receptor activity, type I / endocardial cushion formation / artery development / eye development / pharyngeal system development / endochondral ossification / transmembrane receptor protein serine/threonine kinase activity / receptor protein serine/threonine kinase / pattern specification process / activin binding / cellular response to BMP stimulus / Signaling by BMP / male genitalia development / Signaling by Activin / negative regulation of cell-cell adhesion mediated by cadherin / positive regulation of vascular permeability / activin receptor signaling pathway / negative regulation of activin receptor signaling pathway / Signaling by NODAL / embryonic heart tube morphogenesis / gastrulation with mouth forming second / positive regulation of lipopolysaccharide-mediated signaling pathway / pancreas development / dorsal/ventral pattern formation / transforming growth factor beta binding / cartilage development / kinase activator activity / determination of left/right symmetry / negative regulation of ossification / atrioventricular valve morphogenesis / neural crest cell migration / anterior/posterior pattern specification / negative regulation of cold-induced thermogenesis / cell surface receptor protein serine/threonine kinase signaling pathway / insulin secretion / skeletal system morphogenesis / organ growth / growth factor binding / branching involved in blood vessel morphogenesis / negative regulation of G1/S transition of mitotic cell cycle / ventricular septum morphogenesis / SMAD binding / odontogenesis of dentin-containing tooth / mesoderm development / germ cell development / roof of mouth development / peptide hormone binding / mesoderm formation / positive regulation of intracellular signal transduction / response to magnesium ion / positive regulation of SMAD protein signal transduction / regulation of ossification / blood vessel remodeling / response to retinoic acid / positive regulation of bone mineralization / positive regulation of osteoblast differentiation / BMP signaling pathway / response to glucose / negative regulation of signal transduction / positive regulation of endothelial cell proliferation / protein serine/threonine/tyrosine kinase activity / positive regulation of neuron differentiation / transforming growth factor beta receptor signaling pathway / lung development / protein tyrosine kinase binding / response to glucocorticoid / cytokine activity / positive regulation of epithelial cell proliferation / cellular response to iron ion 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: 3.2 Å | ||||||
データ登録者 | Goebel, E.J. / Saotome, K. / Franklin, M.C. | ||||||
| 資金援助 | 米国, 1件
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引用 | ジャーナル: Proc Natl Acad Sci U S A / 年: 2025タイトル: CryoEM structure of ALK2:BMP6 reveals distinct mechanism that allow ALK2 to interact with both BMP and activin ligands. 著者: Erich J Goebel / Senem Aykul / Warren W Hom / Kei Saotome / Aris N Economides / Matthew C Franklin / Vincent J Idone / ![]() 要旨: Ligands in the transforming growth factor β (TGF-β) family [activins, Bone Morphogenetic Proteins (BMPs), and TGF-βs] signal by bringing together two type I and two type II receptors. Activin ...Ligands in the transforming growth factor β (TGF-β) family [activins, Bone Morphogenetic Proteins (BMPs), and TGF-βs] signal by bringing together two type I and two type II receptors. Activin receptor-like kinase-2 (ALK2) is the only type I receptor among the seven TGF-β type I receptors that interacts with both activin and BMP ligands. With BMPs, ALK2 acts as a signaling receptor to activate small mothers against decapentaplegic 1 (SMAD1)/5/8 signaling. Alternatively, with activins, such as Activin A (ActA), ALK2 forms nonsignaling complexes that negatively regulate ALK2 and ActA signaling. To gain insight into how ALK2 interacts with two distinct classes of ligands, we resolved the cryoelectron microscopy structure of ALK2 in complex with the type II receptor, ActRIIB, and the ligand, BMP6, in parallel with the corresponding structure with ALK3 for direct comparison. These structures demonstrate that ALK2 and ALK3 utilize different mechanisms to interact with BMP6 at the wrist interface, with ALK2 relying on BMP6 glycosylation and ALK3 relying on a salt bridge. Modeling of ALK2:ActA reveals that binding relies on ActA's fingertip region, mirroring the interaction of ActA with its other receptor, ALK4. Our results demonstrate that ALK2 is a "hybrid" receptor that incorporates features of BMP type I receptors such as ALK3 at the wrist interface and an activin type I receptor such as ALK4 at the fingertip. | ||||||
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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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 | 9n4k.cif.gz | 130.1 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9n4k.ent.gz | 98.3 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9n4k.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 | 9n4k_validation.pdf.gz | 1.4 MB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 9n4k_full_validation.pdf.gz | 1.4 MB | 表示 | |
| XML形式データ | 9n4k_validation.xml.gz | 28.8 KB | 表示 | |
| CIF形式データ | 9n4k_validation.cif.gz | 40.7 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/n4/9n4k ftp://data.pdbj.org/pub/pdb/validation_reports/n4/9n4k | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 48883MC ![]() 9mirC 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 F&H 検索 |
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リンク
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集合体
| 登録構造単位 | ![]()
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要素
-Activin receptor type- ... , 2種, 4分子 AFCD
| #1: タンパク質 | 分子量: 14933.380 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: ACVR2B発現宿主: ![]() 参照: UniProt: Q13705, receptor protein serine/threonine kinase #3: タンパク質 | 分子量: 13189.880 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: ACVR1, ACVRLK2発現宿主: ![]() 参照: UniProt: Q04771, receptor protein serine/threonine kinase |
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-タンパク質 , 1種, 2分子 BE
| #2: タンパク質 | 分子量: 15695.711 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: BMP6, VGR発現宿主: ![]() 参照: UniProt: P22004 |
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-糖 , 3種, 10分子 


| #4: 多糖 | | #5: 糖 | ChemComp-NAG / #6: 糖 | |
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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: Ternary complex of ALK2-ActRIIB with BMP6 / タイプ: COMPLEX / 詳細: ALK2-ActRIIB fused by Antibody Hinge region / Entity ID: #1-#3 / 由来: RECOMBINANT | |||||||||||||||
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| 分子量 | 値: 0.08 MDa / 実験値: NO | |||||||||||||||
| 由来(天然) | 生物種: Homo sapiens (ヒト) | |||||||||||||||
| 由来(組換発現) | 生物種: ![]() | |||||||||||||||
| 緩衝液 | pH: 7.5 / 詳細: 50mM Tris-HCL, 100mM NaCl | |||||||||||||||
| 緩衝液成分 |
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| 試料 | 濃度: 3 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: Sample was mono disperse following purification over size exclusion chromatography. | |||||||||||||||
| 試料支持 | グリッドの材料: GOLD | |||||||||||||||
| 急速凍結 | 凍結剤: ETHANE |
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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: TFS KRIOS |
| 電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: OTHER |
| 電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 105000 X / 最大 デフォーカス(公称値): 2400 nm / 最小 デフォーカス(公称値): 800 nm / アライメント法: BASIC |
| 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 | 電子線照射量: 40 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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解析
| EMソフトウェア | 名称: PHENIX / バージョン: 1.21.2_5419 / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 対称性 | 点対称性: C2 (2回回転対称) | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 42185 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 原子モデル構築 | プロトコル: RIGID BODY FIT / 空間: REAL 詳細: Initial fitting was performed in ChimeraX and real-space refinement was carried out within Phenix. | ||||||||||||||||||||||||
| 原子モデル構築 | 3D fitting-ID: 1 / Source name: PDB / タイプ: experimental model
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万見について




Homo sapiens (ヒト)
米国, 1件
引用


PDBj




surface plasmon resonance




