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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: 9m4g | |||||||||
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| タイトル | Structure of AtCDC48 N-domain | |||||||||
要素 | Cell division control protein 48 homolog A | |||||||||
キーワード | PLANT PROTEIN / AAA ATPase / Hexamer / ATP-dependent chaperone / Protein unfollding | |||||||||
| 機能・相同性 | 機能・相同性情報pollen germination / pollen tube growth / regulation of response to oxidative stress / negative regulation of defense response / chloroplast outer membrane / phragmoplast / chloroplast membrane / plant-type cell wall / plasmodesma / mitotic spindle disassembly ...pollen germination / pollen tube growth / regulation of response to oxidative stress / negative regulation of defense response / chloroplast outer membrane / phragmoplast / chloroplast membrane / plant-type cell wall / plasmodesma / mitotic spindle disassembly / VCP-NPL4-UFD1 AAA ATPase complex / retrograde protein transport, ER to cytosol / regulation of proteolysis / autophagosome maturation / polyubiquitin modification-dependent protein binding / proteasomal protein catabolic process / lipid droplet / cytosolic ribosome / cellular response to reactive oxygen species / protein destabilization / spindle / nuclear envelope / ubiquitin-dependent protein catabolic process / proteasome-mediated ubiquitin-dependent protein catabolic process / cell division / nucleolus / Golgi apparatus / ATP hydrolysis activity / protein-containing complex / ATP binding / identical protein binding / nucleus / plasma membrane / cytoplasm / cytosol 類似検索 - 分子機能 | |||||||||
| 生物種 | ![]() | |||||||||
| 手法 | X線回折 / シンクロトロン / 分子置換 / 解像度: 2.6 Å | |||||||||
データ登録者 | Sandholu, A.S. / Zhang, J. / Brandon, Z.H. / Hameed, U.F.S. / Arold, S.T. | |||||||||
| 資金援助 | サウジアラビア, 2件
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引用 | ジャーナル: Plant Commun / 年: 2026タイトル: Cryo-EM structural analyses reveal plant-specific adaptations of the CDC48 unfoldase. 著者: Brandon Huntington / Anandsukeerthi Sandholu / Jun Wang / Junrui Zhang / Lingyun Zhao / Bilal M Qureshi / Umar F Shahul Hameed / Stefan T Arold / ![]() 要旨: Targeted protein degradation through the CDC48 unfoldase enables the maintenance and rapid adaptation of proteomes across eukaryotes. However, the substantial differences among animals, fungi, and ...Targeted protein degradation through the CDC48 unfoldase enables the maintenance and rapid adaptation of proteomes across eukaryotes. However, the substantial differences among animals, fungi, and plants presumably drove extensive adaptation of CDC48-mediated degradation. Although animal and fungal CDC48 systems have shown structural and functional preservation, comparable analysis has been lacking for plants. We determined the structural and functional characteristics of Arabidopsis thaliana CDC48A in multiple states and in complex with the target-identifying cofactors UFD1 and NPL4. Our analysis revealed several features that distinguish AtCDC48A from its animal and yeast counterparts despite 80% sequence identity. Key findings include that AtCDC48A exhibits distinct domain dynamics and engages AtNPL4 in a unique manner. Moreover, AtNPL4 and AtUFD1 do not form an obligate heterodimer; instead, AtNPL4 can independently bind to AtCDC48A and mediate target degradation, although their combined action is synergistic. An evolutionary analysis indicates that these Arabidopsis features are conserved across plants and represent the ancestral state of eukaryotic CDC48 systems. Collectively, our findings suggest that plant CDC48 retains a more modular and combinatorial mode of cofactor usage, highlighting a specific adaptation of targeted protein degradation in plants. | |||||||||
| 履歴 |
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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 | 9m4g.cif.gz | 141.5 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9m4g.ent.gz | 111.5 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9m4g.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
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/m4/9m4g ftp://data.pdbj.org/pub/pdb/validation_reports/m4/9m4g | HTTPS FTP |
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-関連構造データ
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リンク
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集合体
| 登録構造単位 | ![]()
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| 1 | ![]()
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| 2 | ![]()
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| 単位格子 |
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要素
| #1: タンパク質 | 分子量: 18567.422 Da / 分子数: 2 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 遺伝子: CDC48A, CDC48, At3g09840, F8A24.11 / 発現宿主: ![]() #2: 化合物 | ChemComp-PO4 / | #3: 水 | ChemComp-HOH / | 研究の焦点であるリガンドがあるか | Y | Has protein modification | N | |
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-実験情報
-実験
| 実験 | 手法: X線回折 / 使用した結晶の数: 1 |
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試料調製
| 結晶 | マシュー密度: 2.68 Å3/Da / 溶媒含有率: 54.12 % |
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| 結晶化 | 温度: 293 K / 手法: 蒸気拡散法, シッティングドロップ法 / pH: 4.5 詳細: 800mM Sodium phosphate monobasic 100mM Potassium phosphate dibasic 100mM Sodium acetate/Acetic Acid |
-データ収集
| 回折 | 平均測定温度: 100 K / Serial crystal experiment: N |
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| 放射光源 | 由来: シンクロトロン / サイト: SOLEIL / ビームライン: PROXIMA 2 / 波長: 0.980112 Å |
| 検出器 | タイプ: DECTRIS EIGER X 9M / 検出器: PIXEL / 日付: 2023年3月19日 |
| 放射 | プロトコル: SINGLE WAVELENGTH / 単色(M)・ラウエ(L): M / 散乱光タイプ: x-ray |
| 放射波長 | 波長: 0.980112 Å / 相対比: 1 |
| 反射 | 解像度: 2.6→48.25 Å / Num. obs: 12475 / % possible obs: 100 % / 冗長度: 20.3 % / Biso Wilson estimate: 72.54 Å2 / CC1/2: 0.998 / Rmerge(I) obs: 0.199 / Rpim(I) all: 0.064 / Rrim(I) all: 0.209 / Net I/σ(I): 10.4 |
| 反射 シェル | 解像度: 2.6→2.693 Å / 冗長度: 21 % / Rmerge(I) obs: 3.143 / Mean I/σ(I) obs: 1.2 / Num. unique obs: 1486 / CC1/2: 0.308 / Rpim(I) all: 0.996 / Rrim(I) all: 3.297 / % possible all: 100 |
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解析
| ソフトウェア |
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| 精密化 | 構造決定の手法: 分子置換 / 解像度: 2.6→48.25 Å / SU ML: 0.51 / 交差検証法: FREE R-VALUE / σ(F): 1.35 / 位相誤差: 41.3 / 立体化学のターゲット値: ML
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| 溶媒の処理 | 減衰半径: 0.9 Å / VDWプローブ半径: 1.11 Å / 溶媒モデル: FLAT BULK SOLVENT MODEL | ||||||||||||||||||||||||||||||||||||||||
| 精密化ステップ | サイクル: LAST / 解像度: 2.6→48.25 Å
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| 拘束条件 | タイプ: f_plane_restr / Dev ideal: 0.014 / 数: 443 | ||||||||||||||||||||||||||||||||||||||||
| LS精密化 シェル |
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| 精密化 TLS | 手法: refined / Origin x: 8.3353 Å / Origin y: -40.1221 Å / Origin z: 15.1008 Å
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| 精密化 TLSグループ | Selection details: all |
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万見について





X線回折
サウジアラビア, 2件
引用











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